diff output; there being no trailing newline caused it to bitch and
moan and ruin diffs. That's dumb, if I may say so myself.
Yes, this file is coming off the vendor branch. It hasn't been
updated in 6 years.
Approved by: peter
default options for diff. These options are interpreted first and can be
overwritten by explicit command line parameters.
* Add the "-o" option to specify old-traditional output style.
* Add utility functions for env vars obtained from GNU Grep 2.3h.
