Function bootstrap::compile::copy_codegen_backends_to_sysroot

fn copy_codegen_backends_to_sysroot(
    builder: &Builder<'_>,
    compiler: Compiler,
    target_compiler: Compiler
)

Creates the codegen-backends folder for a compiler that’s about to be assembled as a complete compiler.

This will take the codegen artifacts produced by compiler and link them into an appropriate location for target_compiler to be a functional compiler.