Add per-file set noparent and more tests
* Implement new "per-file <globs> = set noparent" statement.
* Update syntax.md with better explanations and examples.
* Remove duplicated syntax comment in Parser.java.
* Semantics of "per-file <globs> = <owner-email-list>" is changed.
Files matching the <globs> now inherit global non-per-file owners
unless "per-file <globs> = set noparent" is used.
* For example, to assign only jj@g.com as the owner of *.java files:
per-file *.java = jj@g.com
per-file *.java = set noparent
* Fix error in Parser.Result.append; add test case.
* Add more tests in ParserTest, FindOwnersIT, OwnersValidatorTest.
Change-Id: I43a306bc9af85badc40b44507d4b2d021888ecd4
7 files changed
