give more common names than 'prior' upon where-is

[Dan Jacobson <jidanni@jidanni.org>]

Just noting that scroll-left, scroll-right are such basic keys for
wide file users, that they should have single keystrokes in
addition/instead of C-x <, C-x >. Yes I can bind them, I'm talking
about choices for defaults.
By the way, I don't see any key on my keyboard marked "next" or "prior", so
C-next, C-prior are not to be found. Wait, I find they are called page
up and page down.  OK, that means all you need to do is make C-h b,
C-h w give the more common names these days for prior etc. in addition
to prior etc.