Moving to dh_installalternatives.

Signed-off-by: Daniel Baumann <daniel@debian.org>

debian/control

@@ -3,6 +3,7 @@ Section: utils
 Priority: optional
 Maintainer: Daniel Baumann <daniel.baumann@progress-linux.org>
 Build-Depends:
+ debhelper (>= 13.1~),
  debhelper-compat (= 13),
 Rules-Requires-Root: no
 Standards-Version: 4.6.0

debian/lunzip.alternatives

@@ -0,0 +1,15 @@
+# lzip-alternative
+Name: lzip
+Link: /usr/bin/lzip
+Alternative: /usr/bin/lzip.lunzip
+Dependents:
+  /usr/share/man/man1/lzip.1.gz lzip.1.gz /usr/share/man/man1/lzip.lunzip.1.gz
+Priority: -1000
+
+# lzip-decompressor
+Name: lzip-decompressor
+Link: /usr/bin/lzip-decompressor
+Alternative: /usr/bin/lzip.lunzip
+Dependents:
+  /usr/share/man/man1/lzip-decompressor.1.gz lzip-decompressor.1.gz /usr/share/man/man1/lzip.lunzip.1.gz
+Priority: -1000

debian/lunzip.postinst

@@ -1,30 +0,0 @@
-#!/bin/sh
-
-set -e
-
-case "${1}" in
-	configure)
-		# lzip-alternative
-		update-alternatives --quiet \
-			--install /usr/bin/lzip lzip /usr/bin/lzip.lunzip -1000 \
-			--slave /usr/share/man/man1/lzip.1.gz lzip.1.gz /usr/share/man/man1/lzip.lunzip.1.gz
-
-		# lzip-decompressor
-		update-alternatives --quiet \
-			--install /usr/bin/lzip-decompressor lzip-decompressor /usr/bin/lzip.lunzip -1000 \
-			--slave /usr/share/man/man1/lzip-decompressor.1.gz lzip-decompressor.1.gz /usr/share/man/man1/lzip.lunzip.1.gz
-		;;
-
-	abort-upgrade|abort-remove|abort-deconfigure)
-
-		;;
-
-	*)
-		echo "postinst called with unknown argument \`${1}'" >&2
-		exit 1
-		;;
-esac
-
-#DEBHELPER#
-
-exit 0

debian/lunzip.prerm

@@ -1,26 +0,0 @@
-#!/bin/sh
-
-set -e
-
-case "${1}" in
-	remove|upgrade|deconfigure)
-		# lzip-alternative
-		update-alternatives --quiet --remove lzip /usr/bin/lzip.lunzip
-
-		# lzip-decompressor
-		update-alternatives --quiet --remove lzip-decompressor /usr/bin/lzip.lunzip
-		;;
-
-	failed-upgrade)
-
-		;;
-
-	*)
-		echo "prerm called with unknown argument \`${1}'" >&2
-		exit 1
-		;;
-esac
-
-#DEBHELPER#
-
-exit 0