8021003: java/util/logging/Logger/getGlobal/TestGetGlobalConcurrent.java fails intermittently
8019945: test/java/util/logging/LogManagerInstanceTest.java failing intermittently
Summary: This fix untangles the class initialization of Logger and LogManager, and also cleans up the relationship between LogManager, LoggerContext, and Logger, which were at the root cause of some intermittent test failures.
Reviewed-by: mchung, martin, plevart