need option to cd up 1 or 2 directories

[ORESoftware]

If we use --search-root=., but are in the wrong cwd

we should also all for just

cgs .

instead of

cgs --search-root=.

the latter is too much

if it's just cgs w/o a dot, we should balk

cgs . --up-to=somefile

so it would search up to the somefile if it can be found