8217660: Refactor module related locked_create_entry_or_null() functions Summary: Remove function return values and add functions that create entries without doing unneeded lookups. Reviewed-by: redestad, lfoltan

8217518: Crypto benchmarks not warming up in time Summary: Adding +AlwaysPreTouch to crypto benchmarks to allow GC to warm up Reviewed-by: redestad

8216136: Take Compile_lock for SystemDictionary::_modification_counter with safepoint check Summary: Transition compiler thread from native to VM state to check the Compile_lock with safepoint always. Reviewed-by: dlong, eosterlund, dholmes