bug#16074: 24.3.50; enhancement request: Remove "pop" from command names & doc for `C-(u|x) C-SPC'

[Drew Adams]

> >> Yes, renaming here seems like a good idea.
> >
> > How about the attached patch?
> 
> I think that looks like the correct solution.

It doesn't address the problem for the `mark-ring',
does it?  My impression was that it addresses it
only for `global-mark-ring'.  The local `mark-ring'
is used much more often than the `global-mark-ring',
and its doc is probably accessed much more often.

For example -

This part of `C-h k C-SPC' is wrong:

 With prefix argument (e.g., C-u C-SPC), jump to the mark,
 and set the mark from position popped off the local mark
                                ^^^^^^^^^^
 ring (this does not affect the global mark ring).
 ...

 If 'set-mark-command-repeat-pop' is non-nil, repeating
 the C-SPC command with no prefix argument pops the next
 position off the local (or global) mark ring and jumps there.

 With C-u C-u as prefix argument, unconditionally set
 mark where point is, even if 'set-mark-command-repeat-pop'
 is non-nil.

And the doc & name of option `set-mark-command-repeat-pop'
are wrong (plus, the line lengths are screwy):

 Non-nil means repeating C-SPC after popping mark
 pops it again.
 That means that C-u C-SPC C-SPC
 will pop the mark twice, and
 C-u C-SPC C-SPC C-SPC
 will pop the mark three times.

And the doc & name of function `pop-to-mark-command'
are wrong:

 Jump to mark, and pop a new position for mark off the ring.

A position is NOT popped off the ring.  That's what's
wrong with all of these.  Likewise, the doc in the
manuals.

The enhancement request is to fix this wrong
terminology wrt BOTH `global-mark-ring' and
`mark-ring'.