This tweaks the hashtable API, and it is incomplete because the WUtil proplist
impl depends heavily on a feature of the old API that is being discontinued.
Moving the proplist code into Rust is our next objective.
While this large change has some unit tests, it has not been integration tested
thoroughly. Removing the global case insensitivity flag may be an issue in
particular.
A few of PropList API functions have been modified (mostly to get rid of
varargs). The definition of one such function has been left in C for cleanup
later.
This is another utility that should not be used in any new (Rust) code. (We
should prefer Vec or something similar.) This should be removed once dependents
are ported to Rust.
This is not a bug-for-bug reimplementation, and it may need some shaking down to
ensure that everything still works. Once their dependents are ported, it would
be appropriate to dispose of them.
trurl