On the fsfs-format7 branch:  teach dgb__log_access() to show a description
for all item types and make it more useful for pre-format7 repos.

* subversion/libsvn_fs_fs/index.h
  (SVN_FS_FS__ITEM_TYPE_ANY_REP): run-time-only type used pre-format7

* subversion/libsvn_fs_fs/cached_data.c
  (dgb__log_access): make callers specifiy the item type; decode content
   for all types; make format6 output contain most of the format7 info
  (svn_fs_fs__get_node_revision,
   create_rep_state_body,
   read_delta_window,
   svn_fs_fs__get_changes): update callers

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1446125 13f79535-47bb-0310-9956-ffa450edef68