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.

OTP-10106
OTP-10107

* hawk/escript-add-create-and-extract:
  Add type info for record fields
  Remove the undocumented function escript:foldl/3
  Make reltool independent of the function escript:foldl/3
  Add functions to create and extract escripts
  Add function zip:foldl/3 to iterate over zip archives

OTP-8521 hawk/escript-add-create-and-extract

Added function zip:foldl/3 to iterate over zip archives.

Added functions to create and extract escripts. See escript:create/2 and
escript:extract/2.

The undocumented function escript:foldl/3 has been removed. The same
functionality can be achieved with the more flexible functions
escript:extract/2 and zip:foldl/3.

Record fields has been annotated with type info. Source files as been
adapted to fit within 80 chars and trailing whitespace hasd been removed.

While at it, adapt the source files to fit within 80 chars and
remove trailing whitespace.