[Crash-utility] less(1) TERM requirements; man page update [was Re: crash CPU bound waiting for user response]

[D. Hugh Redelmeier]

| From: Dave Anderson <anderson at redhat.com>

| Fine, but at a minimum I propose the addition of a "--more" command
| line argument to force its use instead of "less".  With that in place,
| I've verified that crash scrolling works fine using the "vanilla"
| TERM type, and I presume that using "more" for scrolling would suffice
| within the emacs/jove/vanilla environment as well?

Would it not be better to use $PAGER to make this choice?
- it is already a convention
- it doesn't add to the tangle of options
- it allows even more control (eg. PAGER=cat)