Stack from ghstack:

• [wip] load to a single CU #22713 [wip] load to a single CU
• [jit] Make classtypes hold a weak_ptr to their CU #22504 [jit] Make classtypes hold a weak_ptr to their CU
• [jit] Make traced fns also go into the global python CU #22692 [jit] Make traced fns also go into the global python CU
• [jit] _script_compile and _script_class_compile add to the python CU #22221 [jit] _script_compile and _script_class_compile add to the python CU
• [jit] make CompilationUnit::define return defined functions #22667 [jit] make CompilationUnit::define return defined functions
• [jit] refactor self to be a class again #22712 [jit] refactor self to be a class again
• [jit] Give functions qualified names #22711 [jit] Give functions qualified names

This makes it so that all code objects owned by a CompilationUnit will
have a qualified name.

This also means that Module performs one new duty: it does
qualified name resolution by concating the Module qualified name with
the method name to find the method in the owning CU.

gh-metadata: pytorch pytorch 22711 gh/suo/83/head