Add a zless script which invokes less using the lesspipe script. This is

similar to the zmore script that comes with gzip (and in fact, in most
Linux distros, zless is a symlink to that very same zmore script) but has
the advantage that you get the correct file name on the less status line,
and can use :n and :p to navigate back and forth between multiple files.

MFC after:	1 week

usr.bin/less/Makefile

@@ -5,11 +5,12 @@ SRCS=	main.c screen.c brac.c ch.c charset.c cmdbuf.c command.c decode.c \
 	edit.c filename.c forwback.c help.c ifile.c input.c jump.c line.c \
 	linenum.c lsystem.c mark.c optfunc.c option.c opttbl.c os.c output.c \
 	position.c prompt.c search.c signal.c tags.c ttyin.c version.c
-SCRIPTS=lesspipe.sh
-SCRIPTSNAME=lesspipe.sh
+SCRIPTS=lesspipe.sh zless
+SCRIPTSNAME_lesspipe.sh=lesspipe.sh
 DPADD=	${LIBTERMCAP}
 LDADD=	-ltermcap
-LINKS=	${BINDIR}/less ${BINDIR}/more
+LINKS=	${BINDIR}/less ${BINDIR}/more \
+	${BINDIR}/zless ${BINDIR}/bzless
 MLINKS=	less.1 more.1
 CLEANFILES= less.1
 

usr.bin/less/zless.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+#
+# $FreeBSD$
+#
+
+export LESSOPEN="|/usr/bin/lesspipe.sh %s"
+exec /usr/bin/less "$@"