Description of problem:

Going to view a Bug in XML view, reveals <external_choices> that are Perl objects being co-erced into strings.

Version-Release number of selected component (if applicable):

Current Release of BZ

How reproducible:

Every time

Steps to Reproduce:
1. Go to XML representation of Bug
https://bugzilla.redhat.com/show_bug.cgi?ctype=xml&id=648655
2. Notice this entry:
<external_choices>
Bugzilla::Extension::ExternalBugs::Type=HASH(0x[blah])
</external_choices>

(where [blah] is a memory address)

Actual results:
This is a Perl object that's been stringified.

Expected results:
The object should have a meaningful stringification.

Additional info:
This is *NOT* important for SFDC integration, it's just something I ran into.