8059976: Convert JavacFileManager to use java.nio.file internally
Reviewed-by: jlahoda

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

7121682: remove obsolete import
Reviewed-by: jjh

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

7021927: javac: regression in performance
Reviewed-by: jjg

7018859: javac turn off the Zip optimization by default
Reviewed-by: jjg

6943119: Rebrand source copyright notices
Reviewed-by: darcy

6838467: JSR199 FileObjects don't obey general contract of equals.
Reviewed-by: darcy