Remove warnings from servo-gfx
Remove unused code
Merge pull request #430 from ILyoan/rm_warning

Remove various warnings
Remove unused mut in servo-util.
Change Quot back to Div.
Remove modes in servo-gfx.
Appease the new borrow checker.
Work around broken TaskBuilder.
Remove unused mut.
Change FuzzyEq to ApproxEq.
Remove old borrow check workarounds and appease the new borrow checker.
Change core::task::local_data to core::local_data.
Update dependencies and rust.
Merge pull request #435 from metajack/syntax-futurism

Update to latest Rust
submodule: update rust-freetype
submodule: update rust-xlib
Merge RootFlow into BlockFlow
Merge pull request #436 from sfowler/remove-rootflow

Merge RootFlow into BlockFlow
Replace with_imm_node by with_base and with_mut_node by with_mut_base
Merge pull request #437 from sfowler/switch-with-node-to-with-base

Replace with_imm_node by with_base and with_mut_node by with_mut_base