workspace hot-patching, dynamic tls fixups (#5291)

* Refactor cross-tls-crate-dylib configuration and update test output

- Commented out the crate-type configuration in Cargo.toml for cross-tls-crate-dylib.
- Modified the initial value of the thread-local variable FOO from 2.0 to 1.0 in the main.rs test file.
- Updated the output message in main.rs to be more descriptive.
- Added a new field `tls_fixups` to the JumpTable struct in subsecond-types, which will facilitate future runtime TLS sharing.

* ws hotpatch!

* remove old file

* undo core change

* svh

* Enhance rlib path resolution by incorporating -C extra-filename handling

* remove obj diffing

* small cleanups

* obj cache as files

* simplify

* simplify a bit

* dont bother round tripping cache

* extract to helper

* cleanup `build` function

* dont round-trip modified_crates

* make sure to wipe between full

* bit of a cleanup

* use explicit naming

* compact extra method

* fix temp cleanup

* fix warnign

* cleanup

* fmt, clippy

Cargo.toml

@@ -414,6 +414,13 @@ incremental = true
 [profile.dev.package.walrus]
 opt-level = 3
 
+# ensure we have adversarial setup for tls
+[profile.dev.package.cross-tls-crate]
+opt-level = 2
+
+[profile.dev.package.cross-tls-crate-dylib]
+opt-level = 2
+
 [profile.release-max-opt]
 inherits = "release"
 lto = true