landry 97894fe4c9 Update to rust 1.22.1.
full changelog at https://blog.rust-lang.org/2017/11/22/Rust-1.22.html

port changes:
- switch to clang and libc++ (instead of egcc and estdc++)
- use devel/llvm instead of the embedded llvm version
- make i386 produce code for 'pentiumpro' instead of 'pentium4' so that
ppl can use ripgrep on pentium II's (yay!)
- use a hack (codegen-units=16) to fix memory pressure issues on i386.
  Might not work forever.....

tested on i386 & amd64, went into an i386 bulk.
all the hard work from semarie@
2017-12-04 17:31:49 +00:00
..
2017-06-17 02:06:53 +00:00