bug#23206: 25.0.92; dired-shell-stuff-it: wait until all parallel jobs finish

[Tino Calancha]

> These are unrelated changes, so please don't mix them with the changes
> that really fix the problem at hand.
I am sorry tha's my fault.  I should always do atomic changes.

> It is up to the user to type a correct command, and Emacs
> shouldn't try second-guessing those commands.  So let's only remove a
> single instance of these characters at the end, as the original code
> did.
I was 'baby sitting' the user (and my self). Yeah, too much care, 
Emacs users can protect themselves very well ;-)

Attached atomic commits without the extra care.

0001-Wait-until-all-parallel-shell-commands-finish.patch
Description: Text document

0002-dired-shell-stuff-it-Consistent-indentation.patch
Description: Text document