Bug Fixes
---------

- Fix bug that Ctrl-C sometimes does not work as expected in Windows Terminal.
  Addresses: https://cygwin.com/pipermail/cygwin/2021-November/249749.html

- Fix a float rounding issue in newlib.
  Addresses: https://sourceware.org/pipermail/newlib/2021/018626.html

- Fix a permission problem when writing ACLs on Samba.

- Fix the issue that pipe reader falsely detects EOF if the output of
  the C# program is redirected to the pipe.
  Addresses: https://cygwin.com/pipermail/cygwin/2021-November/249777.html