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

- posix_madvise(POSIX_MADV_WILLNEED) now utilizes OS functionality available
  starting with Windows 8/Server 2012.  Still a no-op on older systems.

- posix_madvise(POSIX_MADV_DONTNEED) now utilizes OS functionality available
  starting with Windows 8.1/Server 2012R2.  Still a no-op on older systems.

- sysconf() now supports returning CPU cache information:
  _SC_LEVEL1_ICACHE_SIZE, _SC_LEVEL1_ICACHE_ASSOC, _SC_LEVEL1_ICACHE_LINESIZE,
  _SC_LEVEL1_DCACHE_SIZE, _SC_LEVEL1_DCACHE_ASSOC, _SC_LEVEL1_DCACHE_LINESIZE,
  _SC_LEVEL2_CACHE_SIZE, _SC_LEVEL2_CACHE_ASSOC, _SC_LEVEL2_CACHE_LINESIZE,
  _SC_LEVEL3_CACHE_SIZE, _SC_LEVEL3_CACHE_ASSOC, _SC_LEVEL3_CACHE_LINESIZE,
  _SC_LEVEL4_CACHE_SIZE, _SC_LEVEL4_CACHE_ASSOC, _SC_LEVEL4_CACHE_LINESIZE


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


Bug Fixes
---------

- Fix a hang when stracing a forking or spawning process without activating
  stracing of child processes.
  Addresses: https://cygwin.com/ml/cygwin/2015-08/msg00390.html

- Fix long-standing potential SEGV on 32 bit Cygwin when the dynamic loader
  for OS functions fails to load a function on Windows 7 or later.
  Addresses: No actual bug report known.

- sysconf _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN now handle more than
  64 CPUs on Windows 7 and later.