More progress in the &JSRef -> JSRef conversion

Change all of the <Class>Methods traits to take `self` instead of
`&self`.
Convert various helper traits from &JSRef to JSRef

I converted them all with a few exceptions:

- Methods that were used by trait objects, since trait objects don't
  work with `self` methods.
- Methods that take an &'b JSRef<'a, T> and return an &'b. In reality,
  many (all?) could return an &'a instead, but this isn't allowed by the
  Deref trait.
- Methods that internally rely on the same issue with Deref.
- I left out the traits involved in layout entirely, even though not all
  of their methods suffer from one of the above problems.

There will probably be solutions to all of these problems in the future.
Remove some extraneous &* pairs
Merge pull request #3433 from zwarich/jsref-self-helpers

More progress in the &JSRef -> JSRef conversion
Remove most of FlowList

This needs to be reworked for DST.  Until then, DList<FlowRef> will do.
Upgrade to rustc 0.12.0-pre (4d2af3861 2014-09-17 15:51:11 +0000)
Update the CEF port
Eliminate warnings
Fix upstream merge fallout
Use upstream lazy_static!() macro through Cargo

... instead of having our own copy.

https://github.com/Kimundi/lazy-static.rs