I never liked it, but with C2x coming out, it's best to handle bools
properly. I haven't gone through all the uses of int as bool (I'll leave
that for fixing when I encounter them), but this gets QF working with
both c2x (really, gnu2x because of raw strings).
Moved from reference counting over to a mark and sweep method. Objects
are now required to implement an allRefs method which returns a pointer
to a list of all other referenced objects. How the list is maintained
is up to each object. The retain/release mechanism still works; objects
with any references will not be garbage collected, even if the collector
thinks they should be.
