7022370: Launcher ergonomics should provide simple default implementation Summary: Use a common, platform independent, implementation unless an architecture specific implementation exists Reviewed-by: ksrini, mchung, ohair, gbenson

Merge

6611830: UUID thread-safety and performance improvements Reviewed-by: mduigou, jjb, alanb, briangoetz, dholmes, peterjones Contributed-by: Daniel Aioanei <danielaioanei@google.com>