Winstorecompat: fix CreateMutexW declaration

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5585 4407c894-4637-0410-b4f5-ada5f102cad1
Add InetNtopA, inet_ntop, and InetNtopW prototypes.


git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5586 4407c894-4637-0410-b4f5-ada5f102cad1