On the fsfs-format7 branch: Adapt the remaning files to the recent API
changes and make fsfs create a proper empty repo for format 7.

* subversion/libsvn_fs_fs/fs_fs.c
  (svn_fs_fs__noderev_same_rep_key): s/offset/item_index
  (write_revision_zero): add template for format 7 repos

* subversion/libsvn_fs_fs/recovery.c
  (recover_find_max_ids,
   svn_fs_fs__find_max_ids): adapt to API changes

* subversion/libsvn_fs_fs/rep-cache.c
  (svn_fs_fs__walk_rep_reference,
   svn_fs_fs__get_rep_reference, 
   svn_fs_fs__set_rep_reference): s/offset/item_index

* tools/server-side/svn-rep-sharing-stats.c
  (key_t,
   record): ditto


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1434454 13f79535-47bb-0310-9956-ffa450edef68