bug#19101: 25.0.50; vc-print-log puts wrong buffer into log-view-mode

[Eli Zaretskii]

> From: Ivan Shmakov <ivan@siamics.net>
> Date: Wed, 19 Nov 2014 06:53:15 +0000
> 
> >>>>> Richard Copley <rcopley@gmail.com> writes:
> 
>  > Visit a file under Subversion or RCS (not Git or Bazaar) and invoke
>  > `vc-print-log'.  The log buffer should be put into log-view-mode, but
>  > it isn't.  The buffer visiting the file is put into log-view-mode
>  > instead.
> 
>       This is likely to be caused by VC assuming that the ‘print-log’
>       backend function leaves the log buffer as the current one.

No, it's because Stefan moved the call to pop-to-buffer so that the
part that turned on the mode was running in the wrong buffer.

As for print-log backend function, those that I saw run inside
with-temp-buffer, so they don't switch buffers.