Remove glx bindings, use the servo/rust-glx project instead.
Merge pull request #92 from glennw/remove-glx

Remove glx bindings, use the servo/rust-glx project instead.
Remove CGL functionality, use servo/rust-cgl instead.
Merge pull request #93 from glennw/cgl

Remove CGL functionality, use servo/rust-cgl instead.
Fix fail => panic, static => const and cfg patterns
Merge pull request #94 from Jurily/master

Fix fail => panic, static => const and cfg patterns
add framebuffer error enums
bugfix (?) read_pixels