rebase

rebase, take two

• update to 3.13.3

• pull in upstream commit addressing CVE-2025-4516

Reference: https://github.com/python/cpython/pull/133944
PR: 287009

• lang/python313: update to 3.13.4

Expose FREETHREADED and JIT to show that they build, but FREETHREADED does not package. A re-architecturing of the port to accommodate this is needed.

• split off threaded/GIL-disabled configuration into a child port

GIL-disabled/threaded configuration is effectively its own distinct distribution so it will need its own flavours. Unfortunately regular port/package and threaded/GIL-disabled cannot be installed concurrently unlike other CPython versions.

• bsd.default-versions.mk: add Python 3.13t

I blame BSDCan for missing the build hook-up

• update to 3.13.5

Remove circular dependency on port LLVM, and properly generate flavours

• databases/py-{gdbm,sqlite3}, x11-toolkits/py-tkinter: use correct distfile for 3.13

• fix packaging, again

${PYTHON_VER} now includes the threading flag if set so that flavours work properly, but there are still a few places where we don't want any ABI flags. Introduce two new public variables to this effect.

• python.mk: introduce PYTHON_CEXT_SUFFIX

Only compiled extension modules retain the threaded suffix if set; bytecode does not.

• add missing patch to obviate port LLVM for JIT

rebase