[Patch] Make using SVN as config source more robust

[Toomas Tamm]

On Thu, 2015-01-15 at 16:37 +0100, Moritz Struebe wrote:
> Hey there,
> 
> here's a little patch that makes using svn for the config more robust.
> On some of our machines svn required a run of "svn clean" causing "svn
> up" to fail. Always running "svn clean" should do no harm.

I am not so sure. I sometimes run tests on specific machines, modifying
the config space, and there is a chance that a cron job executes a
softupdate at the same time. If I would be in the middle of a commit, I
would be disappointed if the cron job would silently overrun my work. I
would rather see the cron job fail in this situation.

I would make running "svn clean" an option for those who really need it,
and leave it off by default.

Toomas