Adjust VERSION string on the fly during package build

Adjusting version strings manually is known to be error prone and
annoying, so lets set the version string during package builds
so the version matches exactly the Debian package version.

Acked-by: Daniel Tiefnig <dtiefnig@sipwise.com>

From: Michael Prokop <mprokop@sipwise.com>

debian/rules

@@ -10,11 +10,14 @@
 # export DH_VERBOSE=1
 
 b=$(CURDIR)/debian/build
+VERSION:=$(shell dpkg-parsechangelog | awk '/Version: / { print $$2 }')
 
 build: build-stamp
 
 build-stamp:
 	dh_testdir
+	egrep -q "VERSION = 'UNRELEASED'" lib/admin.pm || \
+                          (echo "Wrong version in lib/csc.pm" && exit 2)
 	mkdir -p pro/etc/ngcp-www-admin pro/etc/apache2/sites-available
 	mkdir -p ce/etc/ngcp-www-admin ce/etc/apache2/sites-available
 	tpage --define PRO=true   etc/admin.conf > pro/etc/ngcp-www-admin/admin.conf.tt2
@@ -44,6 +47,7 @@ ngcp-www-admin:
 	dh_installdocs       -p$@ -P$(b)/$@
 	dh_installchangelogs -p$@ -P$(b)/$@
 	dh_install           -p$@ -P$(b)/$@
+	sed -i -e "s/VERSION = 'UNRELEASED'/VERSION = '$(VERSION)'/" $(b)/$@/usr/share/ngcp-www-admin/lib/admin.pm
 	dh_installexamples   -p$@ -P$(b)/$@
 	dh_installman        -p$@ -P$(b)/$@
 	# drop svn files:

lib/admin.pm

@@ -21,7 +21,7 @@ use Catalyst qw/-Debug ConfigLoader Static::Simple Unicode
                 Session Session::Store::FastMmap Session::State::Cookie
                /;
 
-our $VERSION = '3';
+our $VERSION = 'UNRELEASED';
 
 # Configure the application. 
 #