More cleanups of the include files

- centralizing to simplify the -I's required to compile

src/include/utils/palloc.h

@@ -0,0 +1,26 @@
+/*-------------------------------------------------------------------------
+ *
+ * palloc.h--
+ *    POSTGRES memory allocator definitions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: palloc.h,v 1.1 1996/08/28 01:59:16 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef	PALLOC_H
+#define PALLOC_H
+
+#include "c.h"
+
+extern void*   palloc(Size size);
+extern void    pfree(void *pointer); 
+extern void *repalloc(void *pointer, Size size);
+
+/* like strdup except uses palloc */
+extern char* pstrdup(char* pointer);
+
+#endif	/* PALLOC_H */
+