[PATCH 4/4] comctl32/monthcal: Implement MCM_GETMONTHRANGE for GMR_DAYSTATE flag and a single calendar control

[Nikolay Sivov]

Should fix bug http://bugs.winehq.org/show_bug.cgi?id=16491


When multi calendar support will be here this MCM_GETMONTHRANGE handler could be fully
fixed in a very simple way - min date from first calendar, max date - from the last.

Changelog:
    - implement MCM_GETMONTHRANGE for GMR_DAYSTATE flag and a single calendar control