8162546: change hidden options -Xdebug to --debug, -XshouldStop to --should-stop, and -diags to --diagsReviewed-by: mcimadamore
8161020: javac, fold stop compilation optionsReviewed-by: mcimadamore
8036952: copyright issues in jdk9/dev/langtools filesSummary: Updated copyright notices.Reviewed-by: jjg, jlahoda
8145342: Some copyright notices are inconsistently and ill formattedSummary: Adjusted formatting of copyright notices.Reviewed-by: darcy, alundblad
8076543: Add @modules as needed to the langtools testsReviewed-by: jjg, shurailine
8005207: test has 2 @bug tagsReviewed-by: mcimadamore
6943119: Rebrand source copyright noticesReviewed-by: darcy
6813059: replace use of JavaCompiler.errorCount with shouldContinueReviewed-by: mcimadamore