bug#1806: dired-pop-to-buffer in wrong place

[Juri Linkov]

> I attach a patch which should do that, in principle (actually
> I just revived the respective part from my old specifiers approach).

Thank you!  I'm starting to test your patch, and I see no problems,
everything works fine, it fixes all regressions in Dired.

> Anyone who wants the nil behavior for `dired-shrink-to-fit' can add a
> corresponding entry to `display-buffer-alist' as you proposed earlier.

This means that `dired-shrink-to-fit' could be marked obsolete?

> (Someone would have to formulate that for users nicely and in the
> appropriate context.)

This text could be written to the CURRENT-NAME arg of `make-obsolete'.