* rickard/make-fixes-18/OTP-15657:
  Remove own configured RM make variable

* rickard/make-fixes-17/OTP-15657:
  Remove own configured RM make variable

Instead rely on gnu make's pre-defined RM variable which should
equal 'rm -f'

The OSE port is no longer supported and this commit removed it
and any changes related to it. The things that were general
improvements have been left in the code.

This port has support for both non-smp and smp.

It contains a new way to do io checking in which erts_poll_wait
receives the payload of the polled entity. This has implications
for all linked-in drivers.

erl_memory.c:947:7: warning: passing 'int *' to parameter of type 'socklen_t *' (aka 'unsigned int *') converts between pointers to integer types with different sign [-Wpointer-sign]
                    &saddr_size) != 0)
                    ^~~~~~~~~~~
/usr/include/sys/socket.h:616:74: note: passing argument to parameter here
int     getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict)
                                                                             ^

erl_memory.c:2613:57: warning: passing 'int *' to parameter of type 'socklen_t *' (aka 'unsigned int *') converts between pointers to integer types with different sign [-Wpointer-sign]
    sock = accept(lsock, (struct sockaddr *) &oth_addr, &oth_addr_len);
                                                        ^~~~~~~~~~~~~
/usr/include/sys/socket.h:610:69: note: passing argument to parameter here
int     accept(int, struct sockaddr * __restrict, socklen_t * __restrict)
                                                                        ^

erl_memory.c:861:19: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    *p += sprintf(*p, "%*" USGND_INT_MAX_FSTR " ", fw, mi->size);
                  ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:863:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p,
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:869:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p, "%*" USGND_INT_MAX_FSTR " ", fw, mi->no);
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:871:20: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
            *p += sprintf(*p,
                          ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:878:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p,
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:900:19: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    *p += sprintf(*p, "%*" USGND_INT_MAX_FSTR " ", fw, mi->max_ever_size);
                  ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:902:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p, "%*s %*s ", fw, "", fw, "");
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:904:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p, "%*" USGND_INT_MAX_FSTR " ", fw, mi->max_ever_no);
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:906:20: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
            *p += sprintf(*p, "%*s %*s ", fw, "", fw, "");
                          ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:909:16: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        *p += sprintf(*p, "%*s %*s %*s ", fw, "", fw, "", fw, "");
                      ^~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:986:25: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    area.size = sprintf(area.ptr, format, carg);
                        ^~~~~~~~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1103:25: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    area.size = sprintf(area.ptr,
                        ^~~~~~~~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1109:23: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        area.size += sprintf(area.ptr + area.size,
                             ^~~~~~~~~~~~~~~~~~~~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1120:26: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    area.size += sprintf(area.ptr + area.size,
                         ^~~~~~~~~~~~~~~~~~~~
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1190:18: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    p += sprintf(p, "> %-*s", EM_TIME_FIELD_WIDTH - 2, "Maximum:");
                 ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1223:18: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    p += sprintf(p, "\n");
                 ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1227:15: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        p += sprintf(p, "%s", stop_str);
                     ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1230:15: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
        p += sprintf(p, exit_str, state->info.exit_status);
                     ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1236:18: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    p += sprintf(p, format, tsz, bw);
                 ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1286:18: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    p += sprintf(p, "%*" USGND_INT_32_FSTR " ", EM_TIME_FIELD_WIDTH - 1, secs);
                 ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:1311:18: warning: passing 'usgnd_int_8 *' (aka 'unsigned char *') to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
    p += sprintf(p, "\n");
                 ^
/usr/include/secure/_stdio.h:49:28: note: expanded from macro 'sprintf'
  __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
                           ^
erl_memory.c:2231:32: warning: passing 'char *' to parameter of type 'usgnd_int_8 *' (aka 'unsigned char *') converts between pointers to integer types with different sign [-Wpointer-sign]
    size = write_header(state, state->output.header, 1);
                               ^~~~~~~~~~~~~~~~~~~~
erl_memory.c:736:44: note: passing argument to parameter 'ptr' here
write_header(em_state *state, usgnd_int_8 *ptr, int trunc)
                                           ^

With silent rules, the output of make is less verbose and compilation
warnings are easier to spot. Silent rules are disabled by default and
can be disabled or enabled at will by make V=0 and make V=1.