Advice for changing filename case in SVN on case insensitive system

We have a bunch of Kohana 3.2 projects in revision control, all with lower
case filenames.

We're upgrading to Kohana 3.3; one of the main changes to Kohana 3.3 is
implementing PSR-0 filename conventions, which require the class
Model_Myclass to be found in Model/Myclass.php ... in our current repo it's
in model/myclass.php (all lower case).

I thought I could just svn rename, however I'm confused by the output I'm
seeing:

svn rename myclass.php Myclass.php
svn: E155007: Path '/Full/Path/To/Myclass.php' is not a directory

Making things more confusing, we're on Macs without the extended case
sensitive filename option in OS X, and we have mixed/outdated SVN versions
across our organization: our server is running 1.6.6 and workstations a
hodgepodge of 1.6.19 - 1.7.7

I need some advice on how to deal with all of this. I thought about
installing VirtualBox and using Linux command line to do everything, but
that seems like a bit overkill.

Thanks in advance!

Geoff

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