[fw-mvc] Bug & patch

Hi,

this is not 100% ZF related, but I'll ask it here anyway :)

A client uses ZF 1.7.0 in their project. They included the Zend
library as an svn:external. Works like a charm, but I just discovered
a bug in ZF and I'm writing a patch. I'll be submitting it to Jira
later (since the bug stands in the latest revision), but I also want
to apply the patch on the client's Zend library.

Does anyone have experience with this? How should I do it since I
can't "commit" the patch I make. I don't really want to patch it on
every developer's PC, test environment and live environment unless I
have to.

Thanks for your advise,

Jeroen