Makefile: Fix getting the latest tag in the shortlog target

With minor relases 10 and newer, we need to sort the tags to be
able to get the latest version.

Author: vojtechtrefny

Makefile.am

@@ -86,7 +86,7 @@ rpmlog:
 	echo
 
 shortlog:
-	git shortlog -r --no-merges --format="- %s" -w76,0,2 $$(git tag -l | grep '^[0-9]' | tail -n 1)..HEAD | sed 's/"):$"/"):\n"/g'
+	git shortlog -r --no-merges --format="- %s" -w76,0,2 $$(git tag -l | grep '^[0-9]' | sort -V | tail -n 1)..HEAD | sed 's/"):$"/"):\n"/g'
 
 bumpver:
 	@VERSION=`echo $(PACKAGE_VERSION)|sed -r 's/(.*)\.([0-9]+)/\1/'` ; \