Update audio/cmus to 2.7.1.

Major new features:

 - conditionals in format strings, with syntax %{?CONDITION?A[?B]}
 - sndio output plugin (OpenBSD)
 - VTX (libayemu) input plugin
 - optional mouse support (:set mouse=true to enable)

Notable changes:

 - lots of new formatting options:
   - format_treewin
   - format_treewin_artist
   - format_trackwin_album
   - format_statusline
 - play count support (%X or %{play_count} in format strings)
 - Bash completion support for cmus and cmus-remote
 - support for CMUS_SOCKET environment variable
 - format_print remote command
 - pwd command
 - auto_expand_albums option is split into
   - auto_expand_albums_follow
   - auto_expand_albums_search
   - auto_expand_albums_selcur

audio/cmus/Makefile

@@ -1,7 +1,6 @@
-# $NetBSD: Makefile,v 1.59 2016/03/05 11:28:03 jperkin Exp $
+# $NetBSD: Makefile,v 1.60 2016/08/02 13:57:48 jperkin Exp $
 
-DISTNAME=		cmus-2.6.0
-PKGREVISION=		6
+DISTNAME=		cmus-2.7.1
 CATEGORIES=		audio
 MASTER_SITES=		-https://github.com/cmus/cmus/archive/v${PKGVERSION_NOREV}${EXTRACT_SUFX}
 

audio/cmus/distinfo

@@ -1,8 +1,8 @@
-$NetBSD: distinfo,v 1.21 2015/11/03 01:12:27 agc Exp $
+$NetBSD: distinfo,v 1.22 2016/08/02 13:57:48 jperkin Exp $
 
-SHA1 (cmus-2.6.0.tar.gz) = aba00eb75335532c0413f7c819c2e2d12fcd4314
-RMD160 (cmus-2.6.0.tar.gz) = f0330b9394be19083b850d7d5b68d1bf846ce775
-SHA512 (cmus-2.6.0.tar.gz) = 737ee38886f449aa67b105e170aaa3ef3f7f5dff9be079ff92817e9f249f4e0a88e78a190e8a0ccae1c6be8a11fa954df5b59592472bbb795c36197d2b377dd8
-Size (cmus-2.6.0.tar.gz) = 287834 bytes
+SHA1 (cmus-2.7.1.tar.gz) = e31000f430054f96a0cf5897caef88741992cd32
+RMD160 (cmus-2.7.1.tar.gz) = f15e690243c0ed693f3c2e0e3c68630e0f5a8631
+SHA512 (cmus-2.7.1.tar.gz) = b29ce10bbb61eb41c33c4912be320718fcf005a5797320145b124f048f6be5f5b0cebb67471ef7b062bd6f854849b6aae0e82e9adbf289a44237787932ea1576
+Size (cmus-2.7.1.tar.gz) = 296818 bytes
 SHA1 (patch-mixer__sun.c) = 4a7599fc200157cbd1169125d03ce1e29b26b643
 SHA1 (patch-sun.c) = 1155871f5fcc714e3c26f21ecbd94604fee28a7f