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

Merge

8005282: Use @library tag with non-relative path for javac tests
Reviewed-by: jjg

8004982: JDK8 source with GPL header errors
Reviewed-by: ohair

7025809: Provided new utility visitors supporting SourceVersion.RELEASE_8
Reviewed-by: jjg, mcimadamore

7044486: open jdk repos have files with incorrect copyright headers, which can end up in src bundles
Reviewed-by: ohair, trims

6983738: Use a JavacTestingAbstractProcessor
Reviewed-by: jjg

6933147: Provided new utility visitors supporting SourceVersion.RELEASE_7
Reviewed-by: jjg

6943119: Rebrand source copyright notices
Reviewed-by: darcy

Initial load