Followup to r1529559: mod_dav_fs: Fix encoding of hrefs in PROPFIND response.

Previous commit missed encoding the names of the children of the PROPFIND
request when the depth wasn't 0.

* modules/dav/fs/repos.c
  (dav_fs_append_uri): New function
  (dav_fs_walker): Use dav_fs_append_uri() and adjust length calculations to
    use the encoded length.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1531505 13f79535-47bb-0310-9956-ffa450edef68