[kaffe] -O4 jit3 problem

[Timothy Stack]

> Not sure if the fix is valid.  If they can be freed before the string,
> then you'd have to avoid dereferencing all interned strings here...

fyi, I hacked hashtab.c to avoid the deep comparison when removing a
value.  Now, it will just check the pointers and fail instead of also
trying the comparison function.  This seems to work, although i haven't
gone through the entire run yet...

tim