Cherry-picking part of Hironao's work from #18 on getting extra columns (#7)
Pulling some more of Hironao's helpful extra-column changes from #18 (#7)
Another cherry-pick of Hironao's commits (#7)
Adding further masking to the computeExtraColumn() function
Ugh, bugfixing, bleagh (#7)
Adding tractless CCD Task (#7)
Merge branch '#7' into #5

Conflicts:
	stile/lsst/base_tasks.py
	stile/lsst/sys_test_adapters.py