[update] sysclean (switch to release)

Hi,

Following sthen@ advice, here an update of sysclean for switching to
proper binary tarball.

Thanks.
--
Sebastien Marie

Index: Makefile
===================================================================
RCS file: /cvs/ports/sysutils/sysclean/Makefile,v
retrieving revision 1.16
diff -u -p -r1.16 Makefile
--- Makefile 6 Nov 2017 09:26:48 -0000 1.16
+++ Makefile 27 Feb 2018 13:33:37 -0000
@@ -2,14 +2,16 @@

COMMENT = list obsolete files between OpenBSD upgrades

-GH_ACCOUNT = semarie
-GH_PROJECT = sysclean
-GH_TAGNAME = 2.6
+V = 2.6
+DISTNAME = sysclean-${V}
+REVISION = 0

CATEGORIES = sysutils
HOMEPAGE = https://github.com/semarie/sysclean/

MAINTAINER = Sebastien Marie <semarie@online.fr>
+
+MASTER_SITES = https://github.com/semarie/sysclean/releases/download/${V}/

# ISC
PERMIT_PACKAGE_CDROM = Yes