- API change in WINGs for WMDraw*String().

WMDrawString() and WMDrawImageString() now take WMColor instead of GC as
  arguments. WMDrawImageString() receives 2 colors (text & background).
  This is to allow easy extension for Xft/Xrender and hide X low level details
- Added alpha channel to WMColor. 2 new functions also:
  WMCreateRGBAColor() and WMSetColorAlpha()
- Miscelaneous code cleanups in wtext.c
- Removed obsoleted acconfig.h and implemented its functionality using
  AC_DEFINE and AC_DEFINE_UNQUOTED as autoconf 2.5x recommends.
  This will definitely enforce the need to use autoconf 2.5x

WINGs/Tests/mywidget.c

@@ -150,7 +150,7 @@ paintMyWidget(_MyWidget *mPtr)
 	color = WMWhiteColor(scr);
 	
 	W_PaintText(mPtr->view, mPtr->view->window, scr->normalFont,  0, 0,
-		    mPtr->view->size.width, WACenter, WMColorGC(color),
+		    mPtr->view->size.width, WACenter, color,
 		    False, mPtr->text, strlen(mPtr->text));
 	
 	WMReleaseColor(color);