Texturing: failed to read image (JPG vs jpg)

[petrasovaa]

My image files have upper case extension .JPG and texturing failed because of that:

- running texturing - 
Error in OdmTexturing:
Error in OdmTexturing:
Failed to read image:
'/vagrant_data/uav/uav_small//DSC00016.jpg'

Changing file extension to .jpg helped, but it would be nice support JPG as well.

[smathermather]

Thanks @petrasovaa. Agreed. This is a duplicate issue though, so I'm going to close it:

#33

If you want to try tackling it, it shouldn't be a difficult patch.