report defaults for options, add nodata check, allow users to specify that the x or y axes are epipolar for this pair
Another pass at fixing stereo deps.
StereoSettings: Provide defaults for all of them
dg_mosaic: Fix microsecond formatting and xml parsing bugs
Enable sparse_disp for all ASP alignment methods
dg_mosaic: Fix artifact with a gap showing at stitch boundary
dg_mosaic: Set or wipe image tags rather than keep them wrong
dg_mosaic: Compute the new camera corners
sparse_disp: Finish merging Bens sparse_disp
dg_mosaic: Verbose option added
sparse_disp: Bens fixes for nodata and coarse grid
tif_mosaic: Mosaic while using bilinear interpolation.
stereo_pprc: Comment
dg_mosaic: Incorporate scaling using the internal tool
dg_mosaic: Verbose option expanded
stereo.in: Verbose options added
sparse_disp: Add nodata option
tools: Clean up Makefile.am and fix warning

Warning was about multiple targets for stereo_utils.py. This was
because the script was put in libexec_PROGRAMS and not
libexec_SCRIPTS.
build_vw_asp: script to build ASP/VW