PL/Python integration: support in create/droplang, add CVS keywords,

remove useless files, beat some sense into Makefile.  For me it builds
and sort of runs, so it's a start.

src/pl/plpython/plpython.c

@@ -1,5 +1,6 @@
-/*                                               -*- C -*-
- *
+/* $Header: /cvsroot/pgsql/src/pl/plpython/plpython.c,v 1.2 2001/05/12 01:30:30 petere Exp $ */
+
+/*
  * plpython.c - python as a procedural language for PostgreSQL
  *
  * IDENTIFICATION
@@ -33,6 +34,8 @@
  *
  **********************************************************************/
 
+#include "postgres.h"
+
 /* system stuff
  */
 #include <dlfcn.h>