Added Expert option: "Close rootmenu when mouse (left or right) is clicked outside focus.
Common WindowMaker's rootmenu behavior if press right mouse button open menu and close only with same button.
It's uncomfortably, it patch allows close menu by left or right is clicked outside focus.
Changed func "static WMenu*configureMenu(WScreen *scr, WMPropList *definition)" to non-static forglobal use.
Added new OPTION_WMAKER for this Expert-option. Changed event.c: for correct work should use initialization
func configureMenu afterwMenuDestroy (this is a feature of the event implementation XEvent).