This is the bulk of the work for recording the resource pointer with
with builtin data. I don't know how much of a difference it makes for
most things, but it's probably pretty big for qwaq-curses due to the
very high number of calls to the curses builtins.
Closes#26
tracebox patch, but since the code was already there under a different
name, just rename the old code. Really got to wonder who first wrote this
function: Mercury or LordHavoc (and if LH, did he write it for qf or dp
first?)
