Rollup merge of #91606 - joshtriplett:stabilize-print-link-args, r=pnkfelix

Stabilize `-Z print-link-args` as `--print link-args`

We have stable options for adding linker arguments; we should have a
stable option to help debug linker arguments.

Add documentation for the new option. In the documentation, make it clear that
the *exact* format of the output is not a stable guarantee.

compiler/rustc_interface/src/tests.rs

@@ -678,7 +678,6 @@ fn test_debugging_options_tracking_hash() {
     // `pre_link_arg` is omitted because it just forwards to `pre_link_args`.
     untracked!(pre_link_args, vec![String::from("abc"), String::from("def")]);
     untracked!(profile_closures, true);
-    untracked!(print_link_args, true);
     untracked!(print_llvm_passes, true);
     untracked!(print_mono_items, Some(String::from("abc")));
     untracked!(print_type_sizes, true);