Re: hhctrl.ocx: Make MergeChmProperties() static.

[Erich E. Hoover]

I'm going to need MergeChmProperties() for HH_SET_WIN_TYPE.  I've just
been really busy lately and have not had a chance to cleanup my
patches yet (from discussions with Jacek it looks like we need to redo
storing HH_WINTYPE data a little bit).

Erich