8072777: java/lang/ref/ReferenceEnqueuePending.java: some references aren't queued
Summary: Wait for enqueuing.
Reviewed-by: plevart, mchung

8136583: Core libraries should use blessed modifier order
Summary: Run blessed-modifier-order script (see bug)
Reviewed-by: psandoz, chegar, alanb, plevart

8029235: Update copyright year to match last edit in jdk8 jdk repository for 2013
Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

8027696: Incorrect copyright header in the tests
Reviewed-by: alanb, malenkov, mullan

4243978: (ref) Race condition in Reference.enqueue()
4268317: (ref) Reference.isEnqueued() can return true when instance not enqueued
Summary: The reference handler now declares, and assumes, that the discovered field, rather than the next field, is (to be) used to link the entries in the pending list, thus allowing a reference object to be safely enqueued even while it is in the pending state. Also added slightly modified regression tests from the two bug reports.
Reviewed-by: mchung, alanb, jcoomes