Clean up th ecompile process by centralizing the include files

- code compile tested, but due to a yet unresolved problem with
          parse.h's creation, compile not completed...

src/include/optimizer/planner.h

@@ -0,0 +1,24 @@
+/*-------------------------------------------------------------------------
+ *
+ * planner.h--
+ *    prototypes for planner.c.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: planner.h,v 1.1 1996/08/28 07:23:26 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PLANNER_H
+#define PLANNER_H
+
+/*
+#include "optimizer/internal.h"
+#include "parser/parse_query.h"
+*/
+
+extern Plan *planner(Query *parse);
+extern void pg_checkretval(Oid rettype, QueryTreeList *querytree_list);
+
+#endif	/* PLANNER_H */