8140364: JEP 264 Platform Logger API and Service Implementation
Summary: Initial implementation for JEP 264 Platform Logger API and Service
Reviewed-by: mchung, psandoz, rriggs

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

6278014: java.util.logging.LogRecord.getThreadID() should provide real thread id
Summary: Make j.u.l. thread id a copy of Thread's id, for small values of thread id.
Reviewed-by: alanb

6830220: Logging issues due to regression from bug fix 6797480
Reviewed-by: swamyv
Contributed-by: jeremymanson@google.com