Switch to Ninja Release+Asserts builds

git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1835 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
Build compiler-rt as part of the full build

git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1836 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5