8160974: [TESTBUG] Mark more headful tests with @key headful.
Reviewed-by: serb, simonis

8132771: [TEST_BUG][macosx] Test javax/swing/JTree/DnD/LastNodeLowerHalfDrop.java fails for MacOSX
Reviewed-by: rchamyal, alexsch

8134984: Text files should end in exactly one newline
Summary: automated fixup of newlines at end-of-file via the usual perl one-liner
Reviewed-by: chegar, sherman

8129830: JTree drag/drop on lower half of last child of container incorrect.
Reviewed-by: alexsch, azvegint