Add NO_STAGE all over the place in preparation for the staging support (cat: math)

math/py-gnuplot/Makefile

@@ -1,9 +1,5 @@
-# New ports collection makefile for:	py-gnuplot
-# Date created:				3 July 2000
-# Whom:					Maxim Sobolev <sobomax@FreeBSD.org>
-#
+# Created by: Maxim Sobolev <sobomax@FreeBSD.org>
 # $FreeBSD$
-#
 
 PORTNAME=	gnuplot
 PORTVERSION=	1.8
@@ -24,6 +20,7 @@ USE_PYTHON=	yes
 USE_PYDISTUTILS=	yes
 PYDISTUTILS_PKGNAME=	gnuplot-py
 
+NO_STAGE=	yes
 post-install:
 .if !defined(NOPORTDOCS)
 	@${MKDIR} ${DOCSDIR}