3) Patches for w32api should be sent to the mingw-patches mailing list (see <http://mingw.org/>). FYI, they also have their own rules for submitting patches -- see <http://lists.sf.net/lists/listinfo/mingw-patches> for instructions.
Since when? I've seen patches for w32api posted to and accepted from here on numerous occasions in the past.
Cheers, Nicholas