parallel: Robustify a bit
point2dem: Warn user if orthoimage-hole-fill-len>0 but no ortho image is gen
DemDisparity: Remove unneeded header
Isolate the code for doing ip matching
point2dem: Do not round DEM heights for small bodies
point2dem: Throw error if orth hole fill len is > 0 but no orth is gen
point2dem: Syntax fix
Bundle adjust: Generate match points, and save stuff in output prefix