Fix reftest failure on AMD GPUs. Fixes #2642 (and probably #2064).
Merge pull request #72 from glennw/issue-2642

Fix reftest failure on AMD GPUs. Fixes #2642 (and probably #2064).
Update to latest Rust
Merge pull request #73 from mozilla-servo/rustup_20140618

Update to latest Rust
Upgrade Rust.
Merge pull request #74 from metajack/rustup-20140624

Upgrade Rust. r=mbrubeck
Move logic for tiling from Servo into rust-layers

Pull in the quadtree implementation from Servo and rework the way that
tiles are stored in the layer tree. Instead of storing tiles in-tree,
simply hang them off of ContainerLayer separately. Also have
ContainerLayer templatized to hold arbitrary data, which will prevent
Servo from having to mirror the tree using Servo CompositorLayers.
Merge pull request #75 from mrobinson/layer-reorg

 Move logic for tiling from Servo into rust-layers
Remove CommonLayer and unused ContainerLayer methods

CommonLayer is only used by ContainerLayer, so it can be moved directly
into ContainerLayer. A vector can also be used for storing children
instead of an embedded linked-list since the operations we do on the
list of children are still very limited.
Rename ContainerLayer to Layer
No longer accept an Option for layer size

This is currently unused in Servo.
Merge pull request #76 from mrobinson/remove-common

A round of rust-layers cleanups
Remove the unused Scene::set_transform method
Fix Quadtree tests

Ever since my earlier refactoring, the Quadtree tests have been broken.
Fix this by re-templatizing Quadtree, since the unit tests rely on this
functionality.

Fixes #2768.
Merge pull request #80 from mrobinson/fix-make-check

Fix Quadtree tests
Layers store their bounds

Instead of only storing their origin, layers should store their complete
boundaries, to avoid duplication between Servo and rust-layers.
Remove page_size argument for layer creation

Servo will no longer pass the page_size argument during layer creation,
since the page_size is always equal to the bounding rect.
Merge pull request #78 from mrobinson/bounds

Layers store their bounds
Tag unused arguments to fix build warnings.
Merge pull request #81 from mozilla-servo/unused-variable

Tag unused arguments to fix build warnings.