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

- popen now supports the Glibc 'e' flag to set the FD_CLOEXEC flag on the pipe
  in a thread-safe way.

- netinet/ip6.h header.


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

- Switch to BSD FILE stream fopen/exit semantics, as in all BSD variants and
  Linux/GLibc:  Don't fflush/lseek a FILE stream on fclose and exit, if it
  only has been read from.
  See: http://cygwin.com/ml/cygwin/2014-01/msg00110.html


Bug Fixes
---------

- Store and restore FPU control word and XMM registers when a signal is
  handled.
  Fixes: http://cygwin.com/ml/cygwin/2014-01/msg00075.html

- Signals should no longer hang when they occur within a low-level
  Windows DLL.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/threads.html#00151

- If it turns out that transactions don't work during unlink(2) or rename(2),
  despite the fact that the filesystem claims to handle them, stop transaction
  and try again without.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/msg00119.html

- Closing a dup'ed master tty handle should no longer invalidate the dup'ed fd.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/threads.html#00279

- Problems where ps hangs when used in a pipeline should now be solved.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/threads.html#00262

- Using gdb from a Windows console rather than a pty should no longer randomly
  hang.

- Fix locale-specific radix char handling in scanf family of functions.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/msg00294.html

- The console buffer should no longer be cleared when the resolution of the
  console exceeds some magic threshold.
  Fixes: http://cygwin.com/ml/cygwin/2013-12/threads.html#00406

- Fix inadvertent clearing of entire console buffer on clear screen.
  See: http://cygwin.com/ml/cygwin/2014-01/msg00011.html

- Make sure that stackdump file is closed after use.
  See: http://cygwin.com/ml/cygwin/2014-01/threads.html#00029