block_xmit: improved efficiency for very low bandwidth links
Mission Generator: Various bug fixes

Mission Generator: Search pattern now starts at point closest to entry
lane and heads parallel to search area border from this nearest point.
Other misc bug fixes too.
mission: added --sutton option
mission: minor waypoint adjustments
fixed typo
block_xmit: fixed mss calculation
mosaic: fixed lat/lon handing with no boundary
region: scoring fixes

now score over a 20x20 region
tests: use NN interpolation
scantest: use NN interpolation
mosaic: handle no score on region
scantest: handle non-standard images
block_xmit: added max_queue send option
block_xmit: added per-chunk send times
region: more scoring improvements
scantest: fixed display of regions
missiongen: added --cmac option
test_projection: fix for default resolution
nmea: adding test script
joe: add compactness measure to scoring