[m-rev.] diff: announce recent MinGW fixes

[Julien Fischer]

Branches: 14.01, master.

Announce recent fixes to the MinGW and MinGW64 ports.

NEWS:
 	As above.

Julien.

diff --git a/NEWS b/NEWS
index d153011..c5aacac 100644
--- a/NEWS
+++ b/NEWS
@@ -12,6 +12,9 @@ This is a bug-fix release.
    openSUSE 13.1 systems has been fixed.  (Github issue #14)
  * The documentation now builds correctly on Cygwin systems.
  * The script configure_mingw_cross now supports 64-bit Windows targets.
+* We have added workarounds for problems with (arguably broken)
+  system headers on MinGW and MinGW64 systems.
+* The MinGW port now builds in the absence of POSIX threads library.

  Changes to the Mercury compiler: