* dgud/testcasecuddling:
  stdlib: Fix timing issue in testcase

* legoscia/io-message-queue-optimisation:
  Optimise io requests for long message queues

The reason for this is a requirement on enabling ssh_sftp to write a tar file on the server.
This new api function is used by ssh_sftp:open_tar/3,4.

* nox/stdlib/ms_transform-locate-shadow-warning/OTP-12264:
  Fix locations of shadowing warnings in ms_transform

If a callback function was terminated with exit/1, there would be no
stack trace in the ERROR REPORT produced by gen_server. This has been
corrected. The actual exit reason for the process is not changed.

The correction is due to the the evil testcase
dets_SUITE:simultaneous_open(). If the process repairing a Dets file
is killed (should normally never happen), and another process tries to
repair the file, a temporary file from the first process could live on
for a while, even after a successful call to file:delete(). This has
only been seen on W-nd-ows, where it is a known problem.

There are other ways to deal with the problem (rename the file; use
some other filename), but we continue using one certain filename in
order to be as backwards compatible as possible.

* ap/attribute_fun_arity_in_map/OTP-12213:
  stdlib: Test Map attributes via erl_pp
  stdlib: erl_parse abstract Maps
  stdlib: Refactor ?line in erl_pp_SUITE:misc_attrs
  stdlib: Refactor Maps farity attributes
  Allow Name/Arity syntax in maps inside attributes

* capflam/filelib_wildcard_fix:
  Fix filelib:wildcard/2 when 'Cwd' ends with a dot