debian/rules: use /usr/share/dpkg/pkg-info.mk for identifying version number

Fixes lintian warning:

| I: grml-hwinfo source: debian-rules-parses-dpkg-parsechangelog (line 12)

diff --git a/debian/rules b/debian/rules
index 8a58740..59664e5 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -9,7 +9,7 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
-VERSION:=$(shell dpkg-parsechangelog | awk '/Version: / { print $$2 }')
+include /usr/share/dpkg/pkg-info.mk
 
 build: build-arch build-indep
 
@@ -50,7 +50,7 @@ binary-indep: build install
        dh_installchangelogs
        dh_installdocs
        dh_installman grml-hwinfo.1 sysdump.8
-       sed -i -e "s/^VERSION='\*\*\*UNRELEASED\*\*\*'/VERSION='$(VERSION)'/" $(CURDIR)/debian/grml-hwinfo/usr/bin/grml-hwinfo
+       sed -i -e "s/^VERSION='\*\*\*UNRELEASED\*\*\*'/VERSION='$(DEB_VERSION)'/" $(CURDIR)/debian/grml-hwinfo/usr/bin/grml-hwinfo
        dh_link
        dh_strip
        dh_compress