6962318: Update copyright year
Reviewed-by: xdono

6943119: Rebrand source copyright notices
Reviewed-by: darcy

6927797: langtools/test/tools/javac/EarlyAssert.java fails when run with assertions enabled (-ea)
Reviewed-by: darcy

6843761: Update langtools tests to remove unncessary -source and -target options
Reviewed-by: jjg

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