When parsePropsFromForm in cgi_client.py revision 1.129
comes across a hyperdb.MultiLink, it has problems - at
least, when dealing with ZRoundup and its 'FormItem'
objects.

The attached patch addresses this by seeing if 'value'
has an attribute named 'value', and uses the value of
that attribute in the code that parses out the values
of the MultiLink.

(You can ignore the transposed words part of the patch
- I think I just had a fortuitous incident of hitting
the wrong chord in a remote emacs session on a tricky
terminal).