codecapi.h: Removed not needed version guards.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6381 4407c894-4637-0410-b4f5-ada5f102cad1
wbemcli.idl: Added new IDL file.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6382 4407c894-4637-0410-b4f5-ada5f102cad1