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/csc.pm || \
+                          (echo "Wrong version in lib/csc.pm" && exit 2)
 	mkdir -p pro/etc/ngcp-www-csc pro/etc/apache2/sites-available
 	mkdir -p ce/etc/ngcp-www-csc ce/etc/apache2/sites-available
 	tpage --define PRO=true   etc/csc.conf > pro/etc/ngcp-www-csc/csc.conf.tt2
@@ -44,6 +47,7 @@ ngcp-www-csc:
 	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-csc/lib/csc.pm
 	dh_installexamples   -p$@ -P$(b)/$@
 	dh_installman        -p$@ -P$(b)/$@
 	dh_link              -p$@ -P$(b)/$@

lib/csc.pm

@@ -21,7 +21,7 @@ use Catalyst qw/ConfigLoader Static::Simple Unicode I18N
                 Session Session::Store::FastMmap Session::State::Cookie
                /;
 
-our $VERSION = '3';
+our $VERSION = 'UNRELEASED';
 
 # Configure the application. 
 #