Add missing Cor(ee) types, defines, and interfaces.


git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6489 4407c894-4637-0410-b4f5-ada5f102cad1
mfapi.h: Moved MFCreateAttributes to mfapi.h, where it belongs.

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6490 4407c894-4637-0410-b4f5-ada5f102cad1
Fixed some version guards.

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6491 4407c894-4637-0410-b4f5-ada5f102cad1
Fix C-case for DECLARE_INTERFACE_


git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6492 4407c894-4637-0410-b4f5-ada5f102cad1
Fix DECLARE_INTERFACE_ case for C.


git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6493 4407c894-4637-0410-b4f5-ada5f102cad1