minor cleanup quelling 1.9 warnings
[git-p4: depot-paths = "//src/ruby_parser/dev/": change = 8889]
why didn't that go through?
[git-p4: depot-paths = "//src/ruby_parser/dev/": change = 8890]
Added some tests
[git-p4: depot-paths = "//src/ruby_parser/dev/": change = 8891]