Use downloaded snapshots instead of in-tree rust. Also a working linux travis conf
Make some locals immutable.
auto merge of #2655 : Ms2ger/servo/warnings, r=jdm
Remove unused code to support preffed-off and chrome-only APIs.
Remove compiler warnings from generated mako templates.
Mention the usecase of Traceable/Untraceable.
Use Traceable for primitive types and DOMString
Use Traceable for NodeFlags
Add overflow to child layer size

When creating child layers it is important to consider overflow when
determining the size of the layer. This also means that overflow should
not be too large, so also shrink block width down to the size of their
contained fragment. This means that a block that has been explicitly
sized to width:100px should be 100 pixels wide instead of the width of
its containing block.
Added path space support (Fixes #2150)
auto merge of #2657 : Ms2ger/servo/geckoisms, r=jdm
auto merge of #2660 : glennw/servo/mako-warnings, r=jdm
Render in parallel
Allow render threads to be specified with -t
Add a command line option (-n) to use native threading, for testing.

I added this to test the impact of green threading.
Fix typos
Divide check-ref targets into check-ref-cpu and check-ref-gpu

This allows us to run the CPU and GPU tests individually
Update snapshots to also build/test on OSX
Merge pull request #2671 from larsbergstrom/new_snapshots

Update to use snapshot builds
Request termination for XHR