Fix compilation when building without bison

direct/src/dcparser/dcParser.cxx.prebuilt

@@ -179,7 +179,7 @@ dc_cleanup_parser() {
 #  endif
 # endif
 
-#include "dcParser.yxx.h"
+#include "dcParser.h"
 /* Symbol kind.  */
 enum yysymbol_kind_t
 {

dtool/src/cppparser/cppBison.cxx.prebuilt

@@ -293,7 +293,7 @@ pop_struct() {
 #  endif
 # endif
 
-#include "cppBison.yxx.h"
+#include "cppBison.h"
 /* Symbol kind.  */
 enum yysymbol_kind_t
 {