fix deps.bash. \t does not mean tab in some seds. also: add /dev/null to the ls args to repair handling of empty dependency lists.
fix deps.bash. \t does not mean tab in some seds.
also: add /dev/null to the ls args to repair handling of empty dependency lists.

R=rsc
CC=golang-dev
http://codereview.appspot.com/883045
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go