CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs

The `copy` name is confusing for this function because we also have `copy_op` which is pretty different. I hope `copy_intrinsic` is clearer. Also `step.rs` should really just contain the main loop and opcode dispatch, so move this helper function to a more appropriate place.

r? `@oli-obk`

CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs

The `copy` name is confusing for this function because we also have `copy_op` which is pretty different. I hope `copy_intrinsic` is clearer. Also `step.rs` should really just contain the main loop and opcode dispatch, so move this helper function to a more appropriate place.

r? ``@oli-obk``

CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs

The `copy` name is confusing for this function because we also have `copy_op` which is pretty different. I hope `copy_intrinsic` is clearer. Also `step.rs` should really just contain the main loop and opcode dispatch, so move this helper function to a more appropriate place.

r? ```@oli-obk```

CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs

The `copy` name is confusing for this function because we also have `copy_op` which is pretty different. I hope `copy_intrinsic` is clearer. Also `step.rs` should really just contain the main loop and opcode dispatch, so move this helper function to a more appropriate place.

r? ````@oli-obk````

CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs

The `copy` name is confusing for this function because we also have `copy_op` which is pretty different. I hope `copy_intrinsic` is clearer. Also `step.rs` should really just contain the main loop and opcode dispatch, so move this helper function to a more appropriate place.

r? `````@oli-obk`````

Rollup of 11 pull requests

Successful merges:

 - rust-lang#84409 (Ensure TLS destructors run before thread joins in SGX)
 - rust-lang#84500 (Add --run flag to compiletest)
 - rust-lang#84728 (Add test for suggestion to borrow unsized function parameters)
 - rust-lang#84734 (Add `needs-unwind` and beginning of support for testing `panic=abort` std to compiletest)
 - rust-lang#84755 (Allow using `core::` in intra-doc links within core itself)
 - rust-lang#84871 (Disallows `#![feature(no_coverage)]` on stable and beta (using standard crate-level gating))
 - rust-lang#84872 (Wire up tidy dependency checks for cg_clif)
 - rust-lang#84896 (Handle incorrect placement of parentheses in trait bounds more gracefully)
 - rust-lang#84905 (CTFE engine: rename copy → copy_intrinsic, move to intrinsics.rs)
 - rust-lang#84953 (Remove unneeded call to with_default_session_globals in rustdoc highlight)
 - rust-lang#84987 (small nits)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup