Allow recursive writeability permissions. In other words +w/home/*. This way,
operators can create user directories and write to them.

history--Allow bangs

Substitution--allow things like ^old^new

Job Control--Maybe

.oshrc--File read on init

Handle file ownership problems on cp and touch and vi

Document NUMENTRY

Document Comments in command table

Put in some integrity checking for additive commands (ie, don't
let the user have two ls's) or conflicting ACLs

Allow -r flag to rm.

Fix the big hack of forcing handler functions to have specific names. (ie. if
the command is called 'vi', it will call the internal vi handler, otherwise it
will ignore any arguments, and pass them straight to the command)
