Fixes issue #1068.
Fixes issue #1068.

* subversion/libsvn_wc/update_editor.c
  (add_directory): Error if the directory is named ".svn".

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion