Add llvm trunk to toolchain.
Add llvm trunk to toolchain.

Change-Id: I66b792bd818de2bb0b5fae340a4947856fc34256
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/7101
Tested-by: jenkins
Reviewed-by: Nong Li <99a5e5f8f5911755b88e0b536d46aafa102bed41@cloudera.com>

cloudera/RecordServiceClient,cloudera/RecordServiceClient,cloudera/RecordServiceClient,cloudera/RecordServiceClient,cloudera/RecordServiceClient