Fix Mac commercial build bustage by turning wchar_t support on. r=scc, pinkerton.

build/mac/IDE_Options.h

@@ -45,7 +45,8 @@
 #pragma unsigned_char			off
 #pragma exceptions				on
 #pragma bool 					on
-#pragma RTTI                on
+#pragma wchar_type              on
+#pragma RTTI                    on
 
 
 	/* Save as much space as possible with strings... */