Check for full version in git tag before starting release build

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Makefile.am

@@ -23,7 +23,7 @@ endif
 
 ## Check if tagged in git
 release-hook:
-	@if [ ! `git tag | grep $(PACKAGE_VERSION)` ]; then				\
+	@if [ ! `git tag -l $(PACKAGE_VERSION) | grep $(PACKAGE_VERSION)` ]; then	\
 		echo;									\
 		printf "\e[1m\e[41mCannot find release tag $(PACKAGE_VERSION)\e[0m\n";	\
 		printf "\e[1m\e[5mDo release anyway?\e[0m "; read yorn;			\