Store the refcount structures inside the hash table, rather than in a chained structure. This uses less space and should be easier for the GC to scan (less cache used).
Added a really ugly hack so that the ABI versions of the three .m files are not checked. This will (hopefully!) prevent the GC being enabled when libobjc is loaded after being compiled with -fobjc-gc.
- __strong pointers, preventing objects from being freed
_ __weak pointers are automatically freed when the last remaining __strong pointer goes away
- objc_gc_{retain,release}_np() functions, which can be used to implement CFRetain() and CFRelease() (adds an reference count - the object will not be collected until after its last retain is gone.
theraven