Fix issue that causes linux buildbots to ignore errors
- change string "ERROR" to "FAIL" to match clang lit test results

Also, make LLDB tests work on machines that do not have svn and/or git installed



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@176633 91177308-0d34-0410-b5e6-96231b3b80d8