8143077: Deprecate InputEvent._MASK in favor of InputEvent._DOWN_MASK
Reviewed-by: prr, alexsch, azvegint, mchung, egahlin

8165234: Provide a way to not close toggle menu items on mouse click on component level
Reviewed-by: serb, ssadetsky

8158566: Provide a Swing property to not close toggle menu items on mouse click
Reviewed-by: prr, ssadetsky

8152981: Double icons with JMenuItem setHorizontalTextPosition on Win 10
Reviewed-by: alexsch, serb

8077095: Fix missing doclint warnings in the javax.swing.plaf.basic package
Reviewed-by: serb

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