* egil/maps-fix-src-listing:
  stdlib: Fix map type listing

Stabilize tests for all kind of machines

Old sparc (and newer smaller) machines timeouts in 'random_ref_comp'
decrease load and increase timeouts.

Supervisor:
Turn up accepted time, since if non-linear it should be much worse,
now the test failes on slow multicore machines

Remove memory tests, they fail sometimes and those tests are not
needed to be tested. Hard to predict GC's and other processes behaviours.

* bjorn/stdlib/otp_internal:
  otp_internal: No longer warn for funtions removed in R13B
  otp_internal: Postpone removals from R17 to OTP 18

* vinoski/sys-get-rep-state2:
  remove tuple funs from special process documentation
  fix sys:get_state/1,2 and sys:replace_state/2,3 when sys suspended

OTP-11817

The 'encoding' option of erl_parse:abstract/2 has been extended to
include 'none' and a callback function (a predicate).

The rationale is that a more general means of determining what integer
lists are to be represented as strings may help readability when
generating Erlang code given input in some other encoding than Latin-1
or UTF-8.

The grace period is over.

Add two new system callbacks Module:system_get_state/1 and
Module:system_replace_state/2 to allow sys:get_state/1,2 and
sys:replace_state/2,3 to operate correctly even if a process is sys
suspended. Modify gen_server, gen_fsm, and gen_event to support the new
callbacks.

If a callback module does not export these functions, then by default the
Misc value (the same as that passed as the final argument to
sys:handle_system_msg/6, and returned as part of the return value of
sys:get_status/1,2) is treated as the callback module's state.

The previous behaviour of intercepting the system message and passing a
tuple of size 2 as the last argument to sys:handle_system_msg/6 is no
longer supported.

Add tests to verify the correctness of sys:get_state/1,2 and
sys:replace_state/2,3 when processes are sys suspended. Add two tests for
modules that implement special processes, one that exports
system_get_state/1 and system_replace_state/2 and one that doesn't.

Much of the credit for this patch goes to James Fish, who reported the
initial problem and implemented much of the fix.