On the fsfs-format7 branch:  To be able to optimize pack files,
it will be useful to distinguish between dir, file, dir props
and file props representations.

* subversion/libsvn_fs_fs/index.h
  (SVN_FS_FS__ITEM_TYPE_REP): drop; superseded by ...
  (SVN_FS_FS__ITEM_TYPE_FILE_REP,
   SVN_FS_FS__ITEM_TYPE_DIR_REP,
   SVN_FS_FS__ITEM_TYPE_FILE_PROPS,
   SVN_FS_FS__ITEM_TYPE_DIR_PROPS): ... these
  (SVN_FS_FS__ITEM_TYPE_NODEREV,
   SVN_FS_FS__ITEM_TYPE_CHANGES): renumber

* subversion/libsvn_fs_fs/transaction.c
  (rep_write_contents_close): use the more specific type "file rep"
  (write_hash_rep,
   write_hash_delta_rep): use the item type selected by the caller
  (write_final_rev): specify the specific item types


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1438448 13f79535-47bb-0310-9956-ffa450edef68