* Update Rust to 1.12.0, changes based on Arch Linux's package.
* Forgot to add cmake to rust :P
* Made minimum cmake to 3.4.3 in rust package, maybe fix the tea CI build.
* Fixed rust license install location.
* Fixed small formattion issues in rust package.
* Rust version 1.12.0 is now pre-installed with cargo
* Got rid of merge conflict leftovers
