Make 'update scripts' failures non-fatal

git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1672 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
Make the builds with 'update scripts' failures just green (was: red, currently: orange)


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1673 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5