minor fixes to autobuild

Signed-off-by: Jeff Carr <jcarr@wit.com>

autobuild/autobuild.go

@@ -88,12 +88,12 @@ func build(tag string) *bool {
 	shell.Run("git checkout v" + tag)
 
 	gitref := shell.Run("git rev-list -1 HEAD")
-	tagref := shell.Run("cat .git/refs/tags/v" + tag) // what is the right way?
+	tagref := shell.Run("git rev-list -1 v" + tag)
 
 	if (gitref != tagref) {
-		log.Println("\tJESUS HOW TO DO THIS CORRECTLY?", gitref, "ne", tagref)
-		// os.Exit(-1)
-		// return nil
+		log.Println("\tWHAT WENT WRONG?", gitref, "ne", tagref)
+		b = false
+		return &b
 	}
 
 	// setup the files that will end up in the binary