Integrate MMTk binding into Julia build (src/gc-mmtk)
Wire the in-tree build (Make.inc, Makefile, src/Makefile, src/gc-mmtk/Makefile)
to the vendored binding at src/gc-mmtk/mmtk_julia, move the in-tree MMTk glue
into src/gc-mmtk/, and apply Julia-local adjustments to the binding.
Generated with the assistance of Claude (AI).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
