Which family of path/dirent/uri/relpath functions to use for svn_lock_t->path?

[Daniel Shahaf]

set_lock() subversion/libsvn_fs_fs/lock.c uses svn_dirent_* to interact
with this_path, which is initialized with an svn_lock_t->path.

Should that function be using svn_relpath_* or svn_uri_* instead?