Make HERE absolute


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1606 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
zzz


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1607 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
build clang/msan


git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@1608 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5