Added tests for pp::Token interface and white-space handling by the preprocessor. By the magic of test-case generators, we have 74 tests!
Review URL: https://codereview.appspot.com/6009054

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1036 736b8ea6-26fd-11df-bfd4-992fa37f6226