[physfs] My shot at PHYSFS_stat

[Ryan C. Gordon]

>> Please give me a feedback and tell me that my work was not in vain ;)
> 
> I'll take a look at this soon.

...and now I have.  :)

It's a good start. I cleaned up some small details and committed it to 
the default branch as changeset 1052:f87b0b7cca8e.

    http://hg.icculus.org/icculus/physfs/rev/f87b0b7cca8e

Thanks!

--ryan.