Revision 1664285

On the 'move-tracking-2' branch: Make some use of the convenient array and
hash iteration and accessors added in r1664127.

* subversion/libsvn_delta/branch.c
  (svn_branch_repos_create,
   svn_branch_revision_root_create,
   svn_branch_family_create,
   svn_branch_family_add_new_subfamily,
   family_create_branch_sibling,
   family_find_branch_sibling,
   svn_branch_family_get_branch_instances,
   svn_branch_purge_r,
   family_is_child,
   svn_branch_get_subbranches,
   svn_branch_get_all_sub_branches,
   svn_branch_get_subbranch_at_eid,
   svn_branch_add_new_branch_instance,
   svn_branch_delete_branch_instance_r,
   svn_branch_family_parse,
   svn_branch_revision_root_parse,
   svn_branch_family_serialize,
   svn_branch_branch_subtree_r2): Use them.

* subversion/libsvn_delta/compat3e.c
  (get_unsorted_paths,
   convert_branch_to_paths_r): Use them.

* subversion/svnmover/svnmover.c
  (family_list_branch_instances,
   svn_branch_diff,
   get_subbranches,
   svn_branch_find_predecessor_el_rev): Use them.