8179889: Fix typographic errors in copyright headers
Reviewed-by: erikj, dholmes

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

8005918: [TESTBUG] There are no 'Frame Enter' messages for both frames, only 'Button Enter' message.
Reviewed-by: arapte, alexsch
Contributed-by: ajit.ghaisas@oracle.com