community/rust: update to 1.48
This Merge Request updates Rust to version 1.48 which was released some time ago: https://blog.rust-lang.org/2020/11/19/Rust-1.48.html
Note: Rust moved a lot of compiler-internal code from the src
directory to the compiler
directory so I had to edit most of the patches.
Edited by Rasmus Thomsen