Corrected case error in tally_image_numbers.f90 file extension.
Corrected case error in tally_image_numbers.f90 file extension.

jerryd/opencoarrays,sourceryinstitute/opencoarrays,zbeekman/opencoarrays,zbeekman/opencoarrays,sourceryinstitute/opencoarrays,zbeekman/opencoarrays,jerryd/opencoarrays,sourceryinstitute/opencoarrays,jerryd/opencoarrays