Fix problem #34
Fix problem #34

The vips executable was actually modifying the destination name due to the .
The solution was to name the directories based on sha1 sum of the originating
image. This is a step toward the eventual goal of storing all images by sha
anyways.

VisionSystemsInc/voxel_globe,ngageoint/voxel-globe,ngageoint/voxel-globe,ngageoint/voxel-globe,ngageoint/voxel-globe,VisionSystemsInc/voxel_globe,VisionSystemsInc/voxel_globe,VisionSystemsInc/voxel_globe