Renamed MethodSpace to Methodspace for consistency with Namespace.
Merge branch 'ambient'
Threaded through the method space.
Unthreaded the explicit space from compilation. Aaah.
Cleaned up how roots are accessed and made access consistent.

[Delivers #55966080]
Added simple capture of outer variables.

[Delivers #55540798]
Self-review
Expanded the syntax for lambdas a bit.

[Delivers #57142636]
Self-review
Moved assembler to a separate file.

[Delivers #57140426]
Refactored flag parsing.
Added infrastructure for allocation failure fuzzing the runtime.

[#57143634]
Renamed and hooked all the way up.
Self-review
Refactored gc_safes to make them more convenient to use.

[#57143634]
Fix build error.
Self-review
Reworked gc-safe values completely.
Cleanup
Self-review