Update to pv-1.6.0

From "Scarlett" (scarlett at entering dot space)

sysutils/pv/Makefile

@@ -1,8 +1,8 @@
-# $OpenBSD: Makefile,v 1.7 2013/09/01 12:28:06 sthen Exp $
+# $OpenBSD: Makefile,v 1.8 2015/06/16 12:16:27 jca Exp $
 
 COMMENT =		monitor the progress of data through a pipeline
 
-DISTNAME =		pv-1.4.12
+DISTNAME =		pv-1.6.0
 CATEGORIES =		sysutils
 
 HOMEPAGE =		http://www.ivarch.com/programs/pv.shtml

sysutils/pv/distinfo

@@ -1,2 +1,2 @@
-SHA256 (pv-1.4.12.tar.gz) = Hw8jjDGC2z6HDI1oUWQN23/nHxez6Sud3m/LB0xrebk=
-SIZE (pv-1.4.12.tar.gz) = 113095
+SHA256 (pv-1.6.0.tar.gz) = ndRTkYBrDtIVq+5MWsFZfQGMOG/pwfWv0va8Owf9gsM=
+SIZE (pv-1.6.0.tar.gz) = 123072

sysutils/pv/patches/patch-autoconf_make_unreal_mk

@@ -1,11 +0,0 @@
-$OpenBSD: patch-autoconf_make_unreal_mk,v 1.2 2012/02/16 22:34:34 pascal Exp $
---- autoconf/make/unreal.mk.orig	Mon Jan 18 22:56:49 2010
-+++ autoconf/make/unreal.mk	Mon Feb  6 20:29:24 2012
-@@ -155,7 +155,6 @@ install: all doc
- 	                  "$(DESTDIR)$(bindir)/$(package)"
- 	$(INSTALL) -m 644 doc/quickref.1 \
- 	                  "$(DESTDIR)$(mandir)/man1/$(package).1"
--	-$(DO_GZIP) "$(DESTDIR)$(mandir)/man1/$(package).1"
- 	if test -n "$(CATALOGS)"; then \
- 	  catalogs='$(CATALOGS)'; \
- 	  for cat in $$catalogs; do \