On the fsx-id branch:
What used to be just ID _parts_ is now all the ID we need.  Rename the
types and functions accordingly.

* subversion/libsvn_fs_x/id.h
  (svn_fs_x__id_part_t): Rename to ...
  (svn_fs_x__id_t): ... this. Update docstring.
  (svn_fs_x__noderev_id_t): Drop. Replaced by svn_fs_x__id_t.
  (svn_fs_x__id_part_is_root,
   svn_fs_x__id_part_eq,
   svn_fs_x__id_part_parse,
   svn_fs_x__id_part_unparse,
   svn_fs_x__id_part_reset,
   svn_fs_x__id_part_used,
   svn_fs_x__id_part_compare): Rename to ...
  (svn_fs_x__id_is_root,
   svn_fs_x__id_eq,
   svn_fs_x__id_parse,
   svn_fs_x__id_unparse,
   svn_fs_x__id_reset,
   svn_fs_x__id_used,
   svn_fs_x__id_compare): ... these and update parameter types.
  (svn_fs_x__init_txn_root,
   svn_fs_x__init_rev_root): Update parameter types.

* subversion/libsvn_fs_x/cached_data.c
* subversion/libsvn_fs_x/cached_data.h
* subversion/libsvn_fs_x/caching.c
* subversion/libsvn_fs_x/changes.c
* subversion/libsvn_fs_x/dag.c
* subversion/libsvn_fs_x/dag.h
* subversion/libsvn_fs_x/fs.h
* subversion/libsvn_fs_x/fs_id.h
* subversion/libsvn_fs_x/fs_id.c
* subversion/libsvn_fs_x/fs_x.c
* subversion/libsvn_fs_x/id.c
* subversion/libsvn_fs_x/index.c
* subversion/libsvn_fs_x/index.h
* subversion/libsvn_fs_x/low_level.c
* subversion/libsvn_fs_x/noderevs.c
* subversion/libsvn_fs_x/pack.c
* subversion/libsvn_fs_x/transaction.c
* subversion/libsvn_fs_x/transaction.h
* subversion/libsvn_fs_x/tree.c
* subversion/libsvn_fs_x/util.c
* subversion/libsvn_fs_x/util.h
* subversion/libsvn_fs_x/verify.c
  (): s/__id_part/__id/g
      s/__noderev_id/__id/g
      Adapt indentation where necessary.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsx-id@1648190 13f79535-47bb-0310-9956-ffa450edef68