JSDoc-specific test functions are now properties of a `jsdoc` global, not a `jasmine` global.
Also updates license files to reflect the fact that we no longer vendor anything.
As part of this commit, we automatically flag rest parameters as repeatable, even if the JSDoc comment doesn't identify the parameter as repeatable. As a result, it's difficult to document a rest parameter as though it were a normal parameter (should you want to do that for some reason). I may revert this piece if it generates complaints.
