Update to rustc 0.13.0-dev 38517d0eb
Fix warnings 'static constant should be uppercase'
Merge pull request #411 from lucidd/latest-rust

Update to latest rustc and fix some warnings
Change fail! to panic!
Merge pull request #413 from lucidd/master

Change fail! to panic!
Fix missing_doc warning
Merge pull request #414 from darinmorrison/master

Fix missing_doc warning
-Fixed build break (&str -> str)
-Removed some warnings.