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

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

6459800: Some Swing classes violate encapsulation by returning internal Insets
Reviewed-by: azvegint, alexsch