Fix JPEG bug with VisualSFM
Fix JPEG bug with VisualSFM

- VisualSFM dereferences symlinks, breaking the efficient symlink code

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