- Convert to new perl framework

- Trim Makefile header
- Remove MAKE_JOBS_SAFE=yes, it's the default.

math/p5-Math-String/Makefile

@@ -1,9 +1,5 @@
-# New ports collection makefile for:	p5-Math-String
-# Date created:		2012-04-08
-# Whom:			Steve Wills <swills@FreeBSD.org>
-#
+# Created by: Steve Wills <swills@FreeBSD.org>
 # $FreeBSD$
-#
 
 PORTNAME=	Math-String
 PORTVERSION=	1.28
@@ -17,7 +13,8 @@ COMMENT=	Perl module to calculate with strings as if they were big integers
 BUILD_DEPENDS=	p5-Math-BigInt>=1.87:${PORTSDIR}/math/p5-Math-BigInt
 RUN_DEPENDS:=	${BUILD_DEPENDS}
 
-PERL_CONFIGURE=	yes
+USES=		perl5
+USE_PERL5=	configure
 
 MAN3=		Math::String.3 \
 		Math::String::Charset.3 \