8076543: Add @modules as needed to the langtools tests
Reviewed-by: jjg, shurailine

8062348: langtools tests should close file manager (group 1)
Reviewed-by: darcy

8044859: javac duplicates option processing when using Compiler API
Reviewed-by: mcimadamore, vromero, jlahoda

6943119: Rebrand source copyright notices
Reviewed-by: darcy

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