fix build error on android(libuv 3.0)
add android graphic surface layer using EGL extensions
teporarily rollback of rust(because of uv error, we can not enter into amain. io errors are happened)
modify way to call main on android
add rust-egl to submodule
Servo-Android App packaging works
update glut_windowing for language change
update submodules
update gfx font stuffs for android
add a minor changes & trigger rust rebuild
fix .gitmodules to use https
auto merge of #1445 : webconv/servo/PR_android, r=kmcallister

1. We've aimed to android 4.3 Jellybean devices like Galaxy 10.1 and Galaxy Nexus, etc. I think it could still support android 4.1
2. Needs android ndk r9(not r9b) and latest android sdk
3. Needs some device list update on sdk for apk build.
4. Currently we can not build android port on mac because compiler build problem like https://github.com/mozilla/rust/pull/10921. Hopefully I expect that it could be resolved at next rust upgrade.