Transscript wmcontainer to IDL and verify interfaces


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6509 4407c894-4637-0410-b4f5-ada5f102cad1
Make DECLSPEC_DLLIMPORT widl-comppatible.


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6510 4407c894-4637-0410-b4f5-ada5f102cad1
Update wincrypt (and add new dependency) for Windows 7, Windows 8.
Additionally make it compatible with widl-tool


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6511 4407c894-4637-0410-b4f5-ada5f102cad1