[PATCH] contrib/client-side/asvn: "asvn status" updates asvn file properties

asvn stores file permissions in subversion properties.
I would expect, that a "asvn status" shows, if file permissions have
changed. This patch enables this functionality by updating the svn
properties before calling "svn status"

[[[
"asvn status" updates asvn file properties

* contrib/client-side/asvn
  (main): "asvn status" also calls pre_checkin
          before calling "svn status"

patch by joerg.steffens < at > dass-it.de
]]]