[BusyBox] patch: allow ls coloring to be disabled

[Paul Fox]

i wrote:
 > i'm not attached to this particular implementation, but i do feel
 > that the mechanism is necessary.

and what i should have added, is:  i'm happy to take suggestions as to
how it should be done properly, and redo it.  re-reading what i
wrote, it sounds like i expected someone else to fix what i've
started.

paul
=---------------------
 paul fox, pgf at brightstareng.com