Changes to testsuite(2)

Changes to testsuite:
commit a80663d37b7a8c834537c700528383a65e50fbdf
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Tue Nov 12 23:42:10 2013 +0000

    Test Trac #5996

commit 6ee5303beb6d018b542d408c2027f582e2c1437b
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Tue Nov 12 23:41:45 2013 +0000

    Detect msys2 via uname (different to msys)

    uname -s
      msys gives "MINGW32"
      msys2 gives "MINGW_NT-6.2"