- 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

src/icon.c

@@ -812,7 +812,6 @@ void
 wIconPaint(WIcon *icon)
 {
     WScreen *scr=icon->core->screen_ptr;
-    GC gc = scr->icon_title_gc;
     int x;
     char *tmp;
 
@@ -838,7 +837,7 @@ wIconPaint(WIcon *icon)
 	else
 	  x = (icon->core->width - w)/2;
 
-	WMDrawString(scr->wmscreen, icon->core->window, gc,
+	WMDrawString(scr->wmscreen, icon->core->window, scr->icon_title_color,
 		     scr->icon_title_font, x, 1, tmp, l);
 	wfree(tmp);
     }