* Revert "Update cur_L on exceptional path (arm)"
* Revert "arm64: fix cur_L restoration on error throw"
* Revert "Update cur_L on exceptional path"
* Revert "Fix cur_L tracking on exceptional path"
* Restore cur_L for specific Lua/C API use case.
* Fix Clang build.

Closes #6323
Part of #9145

NO_DOC=LuaJIT submodule bump
NO_TEST=LuaJIT submodule bump