8163261: regression on Linux: java/awt/LightweightDispatcher/LWDispatcherMemoryLeakTest.java
Reviewed-by: serb, alexsch

8163193: Metal L&F gradient is lighter on HiDPI display after the fix JDK-8143064
Reviewed-by: serb, ssadetsky

8162856: JSlider thumb is twice smaller on HiDPI display
Reviewed-by: prr, serb

8143064: Icons are not properly rendered with Windows L&F on HiDPI display
Reviewed-by: ssadetsky

8138764: In some cases the usage of TreeLock can be replaced by other synchronization
Reviewed-by: alexp, alexsch

6587235: Incorrect javadoc: "no parameter" in 2d source code
Reviewed-by: azvegint, prr

8067377: My hobby: caning, then then canning, the the can-can
Summary: Fix ALL the stutters!
Reviewed-by: rriggs, mchung, lancea

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com