Restore original images before uninstallation (patch included)

Hi,

I created a patch for the current stable version of this module. It allows to restore all original image files before uninstalling the module. At first I added this functionality in a hook_uninstall function, but unfortunately the batch process functions can't be found when the module is uninstalled. So I had to move it to the module code.

For now, you can access it through the path admin/imagefield_crop/restore

Cheers,

Thomas