fix compiler path


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@2215 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
start emulator in the background


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@2216 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5