Fixed up colorization tests.
Use the 'skipTrivia' scanner flag for lexical classification.
Process unterminated multiline comments the same way we handle multiline strings.
No longer create an entire scanner when performing line classification.
Added unit test for property access colorization.
Added test cases for multiline comments in line classification.
Changed wording for unit tests.
Merge pull request #731 from Microsoft/acknowledgeTrivia

Use the 'skipTrivia' scanner flag for lexical classification