[physfs] Failures loading from some (but not all) zip files with particular filenames

[Ryan C. Gordon]

> Do you think, can whatever in physfs is causing these failures to
> occur be fixed?

This is the changeset that caused this bug:

     http://hg.icculus.org/icculus/physfs/rev/1eed20f2a6a8

There was a legitimate reason for this change (it fixes a different 
case, but broke it for your case)...I'll fix this correctly soon. For 
now, you can just back out that change in your local copy.

--ryan.