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What's new:
-----------

- Drop support for Vista and Server 2008.

- Add code to handle setrlimit(RLIMIT_AS).

- Add code to handle signal masks in /proc/<PID>/status.

- Handle UDP_SEGMENT and UDP_GRO socket options.


What changed:
-------------

- The CYGWIN=pipe_byte option is now set by default, so that pipes are
  opened in byte mode rather than message mode.
  Addresses: https://cygwin.com/pipermail/cygwin/2021-March/247987.html

- The stdio input functions no longer try again to read after EOF.
  This aligns Cygwin behavior to that of Linux.
  Addresses: https://cygwin.com/pipermail/cygwin/2022-June/251672.html

- Treat an empty path (empty element in PATH or PATH is absent) as
  the current directory as Linux does.
  Addresses: https://cygwin.com/pipermail/cygwin/2022-June/251730.html


Bug Fixes
---------

- Don't error out if getfacl(1) is called on a socket file.
  Partially addresses: https://cygwin.com/pipermail/cygwin/2022-July/251768.html