UBUNTU: [debian] insertchanges -- fix to work across major version changes

Signed-off-by: Andy Whitcroft <apw@canonical.com>

debian/rules.d/0-common-vars.mk

@@ -11,6 +11,8 @@ revision ?= $(word $(words $(revisions)),$(revisions))
 prev_revisions := $(filter-out $(revision),0.0 $(revisions))
 prev_revision := $(word $(words $(prev_revisions)),$(prev_revisions))
 
+prev_fullver ?= $(shell dpkg-parsechangelog -l$(DEBIAN)/changelog -o1 -c1 | sed -ne 's/^Version: *//p')
+
 family=ubuntu
 
 # This is an internally used mechanism for the daily kernel builds. It

debian/rules.d/1-maintainer.mk

@@ -88,10 +88,9 @@ printenv:
 	@echo "arch                      = $(arch)"
 	@echo "kmake                     = $(kmake)"
 
-prev_release="$(release)-$(prev_revision)"
 printchanges:
 	@baseCommit=$$(git log --pretty=format:'%H %s' | \
-		awk '/UBUNTU: '".*Ubuntu-$(prev_release)"'$$/ { print $$1; exit }'); \
+		awk '/UBUNTU: '".*Ubuntu-$(prev_fullver)"'$$/ { print $$1; exit }'); \
 		git log "$$baseCommit"..HEAD | \
 		perl -w -f $(DROOT)/scripts/misc/git-ubuntu-log $(ubuntu_log_opts)