Update rustc to revision 3dcd2157403163789aaf21a9ab3c4d30a7c6494d.
Various compile fixes for android rustup (link still fails).
auto merge of #4405 : servo/servo/rustup_20141124, r=jdm
Compile fix for glutin feature after rust upgrade.
auto merge of #4414 : glennw/servo/fix-glutin, r=larsbergstrom
compositing: Implement `cursor` per CSS3-UI § 8.1.1 in the CEF/Mac port.

I'm not sure how we want to handle Linux cursors, and GLFW has no
ability to set cursors (short of disabling it and managing it yourself).