Fix issue #899.
Fix issue #899.

* update_editor.c (add_or_open_file):  don't add a new file if a
  scheduled-add entry already exists.

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