Mac OS X: Added shadows to menu and tooltip windows; this was lost when going Cocoa.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7928 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_cocoa.mm

@@ -1964,6 +1964,7 @@ void Fl_X::make(Fl_Window* w)
 					styleMask:winstyle  
 					  backing:NSBackingStoreBuffered 
 					    defer:NO];
+    [cw setHasShadow:YES];
     [cw setAcceptsMouseMovedEvents:YES];
     x->xid = cw;
     FLView *myview = [[FLView alloc] init];