sysutils/rsnapshot: unbreak with Perl 5.18

- Backport an upstreamed patch which unbreaks rsnapshot with Perl >= 5.18.
- Bump PORTREVISION

PR:		195446
Differential Revision:	https://reviews.freebsd.org/D1324
Submitted by:	David O'Rourke <dor.bsd@fastmail.fm>
Approved by:	remko (maintainer)
Approved by:	koobs (mentor)

sysutils/rsnapshot/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	rsnapshot
 PORTVERSION=	1.3.1
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	sysutils
 MASTER_SITES=	http://www.rsnapshot.org/downloads/
 
@@ -27,10 +27,4 @@ post-install:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
-.include <bsd.port.pre.mk>
-
-.if ${PERL_VER} >= 5.18
-BROKEN=		Does not build with Perl 5.18 or above
-.endif
-
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>

sysutils/rsnapshot/files/patch-rsnapshot-program.pl

@@ -0,0 +1,14 @@
+# Description: rsnapshot doesn't build with perl >= 5.18 pod2man otherwise
+# Issue ID: https://github.com/DrHyde/rsnapshot/issues/8
+#
+--- rsnapshot-program.pl.orig	2014-12-07 09:17:47 UTC
++++ rsnapshot-program.pl
+@@ -6716,6 +6716,8 @@ Putting it all together (an example file
+ 
+ =back
+ 
++=back
++
+ =head1 USAGE
+ 
+ B<rsnapshot> can be used by any user, but for system-wide backups