Changed NonCamelCaseTypes lint to warn by default

Added allow(non_camel_case_types) to librustc where necesary

Tried to fix problems with non_camel_case_types outside rustc

fixed failing tests

Docs updated

Moved #[allow(non_camel_case_types)] a level higher.

markdown.rs reverted

Fixed timer that was failing tests

Fixed another timer

src/librustdoc/html/markdown.rs

@@ -24,6 +24,8 @@
 //! // ... something using html
 //! ```
 
+#[allow(non_camel_case_types)];
+
 use std::cast;
 use std::fmt;
 use std::io;