uuid.c: Define NTDDI_VERSION to NTDDI_WIN8 to ensure that all GUIDs are defined.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6267 4407c894-4637-0410-b4f5-ada5f102cad1
Add _WIN32_WINNT define.  Additional I changed version to 15.0 so that we have a while before we need to modify that again.


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6268 4407c894-4637-0410-b4f5-ada5f102cad1
winerror.h: Added FACILITY_AUDCLNT define.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6269 4407c894-4637-0410-b4f5-ada5f102cad1
dxguid.c: Include d3d11 GUIDs.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6270 4407c894-4637-0410-b4f5-ada5f102cad1