Add Xtrans definitions (FONT_t, TRANS_CLIENT) to clean up warnings.

Add XSERV_t, TRANS_SERVER, TRANS_REOPEN to quash warnings.
Add #include <dix-config.h> or <xorg-config.h>, as appropriate, to all
    source files in the xserver/xorg tree, predicated on defines of
    HAVE_{DIX,XORG}_CONFIG_H. Change all Xfont includes to
    <X11/fonts/foo.h>.

Xprint/pcl/PclGC.c

@@ -46,6 +46,10 @@ copyright holders.
 */
 /* $XFree86: xc/programs/Xserver/Xprint/pcl/PclGC.c,v 1.9 2001/01/19 18:34:28 dawes Exp $ */
 
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
 #include "gcstruct.h"
 
 #include "Pcl.h"