8145342: Some copyright notices are inconsistently and ill formatted
Summary: Adjusted formatting of copyright notices.
Reviewed-by: darcy, alundblad

8047675: tools/javac/defaultMethods/Assertions.java fails if run with -enableassertions (-ea)
Summary: Using ToolBox to start new Java processes, to avoid passing default VM options to the newly started process.
Reviewed-by: jjg

8056283: @ignore tools/javac/defaultMethods/Assertions.java until JDK-8047675 is fixed
Reviewed-by: ksrini

8025141: java.lang.ClassFormatError: Illegal field modifiers in class (...)
Summary: Should not generate non-public $assertionsDisabled field into interfaces
Reviewed-by: jjg, vromero