Update "make release" target

This commit allos the use of the VERSION variable to set the version to
be tagged, instead of just incrementing the last digit in the VERSION
file.

It stops creating the .zip and .tar.gz files since those are kept in
GitHub anyway.

Signed-off-by: Thiago Macieira <[email protected]>

Author: thiagomacieira

Makefile

@@ -179,9 +179,15 @@ distcheck: .git
 
 release: .git
 	$(MAKE) -f $(MAKEFILE) distcheck
+ifeq ($(VERSION),)
 	git -C $(SRCDIR). show HEAD:VERSION | \
 	  perl -l -n -e '@_ = split /\./; print "$$_[0]." . ($$_[1] + 1)' > $(SRCDIR)VERSION
-	git -C $(SRCDIR). commit -s -m "Update version number" VERSION
+else
+	echo "$(VERSION)" > VERSION
+endif
+	if test -n "`git diff VERSION`"; then \
+	  git -C $(SRCDIR). commit -s -m "Update version number" VERSION; \
+	fi
 	{ echo "TinyCBOR release `cat $(SRCDIR)VERSION`"; \
 	  echo; \
 	  echo '# Write something nice about this release here'; \
@@ -194,7 +200,6 @@ release: .git
 	} > $(SRCDIR).git/TAG_EDITMSG
 	@`git -C $(SRCDIR). var GIT_EDITOR` $(SRCDIR).git/TAG_EDITMSG
 	git -C $(SRCDIR). tag -a -F $(SRCDIR).git/TAG_EDITMSG $(GITTAGFLAGS) v`cat $(SRCDIR)VERSION`
-	$(MAKE) -f $(MAKEFILE) dist
 
 .PHONY: all check silentcheck configure install uninstall
 .PHONY: mostlyclean clean distclean