Adding lzip-decompressor alternative.

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

debian/control

@@ -17,6 +17,7 @@ Depends:
  ${shlibs:Depends},
 Provides:
  lzip-alternative,
+ lzip-decompressor,
 Description: data compressor based on the LZMA algorithm (decompressor)
  Lzip is a lossless data compressor based on the LZMA algorithm, with very safe
  integrity checking and a user interface similar to the one of gzip or bzip2.

debian/xlunzip.postinst

@@ -4,10 +4,17 @@ set -e
 
 case "${1}" in
 	configure)
+		# lzip-alternative
 		update-alternatives --quiet \
 			--install /usr/bin/lzip lzip /usr/bin/lzip.xlunzip -3000 \
 			--slave /usr/share/info/lzip.info.gz lzip.info.gz /usr/share/info/lzip.xlunzip.info.gz \
 			--slave /usr/share/man/man1/lzip.1.gz lzip.1.gz /usr/share/man/man1/lzip.xlunzip.1.gz
+
+		# lzip-decompressor
+		update-alternatives --quiet \
+			--install /usr/bin/lzip-decompressor lzip-decompressor /usr/bin/lzip.xlunzip -3000 \
+			--slave /usr/share/info/lzip-decompressor.info.gz lzip-decompressor.info.gz /usr/share/info/lzip.xlunzip.info.gz \
+			--slave /usr/share/man/man1/lzip-decompressor.1.gz lzip-decompressor.1.gz /usr/share/man/man1/lzip.xlunzip.1.gz
 		;;
 
 	abort-upgrade|abort-remove|abort-deconfigure)

debian/xlunzip.prerm

@@ -4,7 +4,11 @@ set -e
 
 case "${1}" in
 	remove|upgrade|deconfigure)
+		# lzip-alternative
 		update-alternatives --quiet --remove lzip /usr/bin/lzip.xlunzip
+
+		# lzip-decompressor
+		update-alternatives --quiet --remove lzip-decompressor /usr/bin/lzip.xlunzip
 		;;
 
 	failed-upgrade)