widl: Make identifiers file more compatible with midl.

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6442 4407c894-4637-0410-b4f5-ada5f102cad1
Updated imported headers to current Wine version.

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6443 4407c894-4637-0410-b4f5-ada5f102cad1