In FSX, begin getting rid of the redundant noderev IDs within changed paths lists.
This change dynamically determines the ID for the changed_paths API implementation, effectively rendering the stored IDs unnecessary.
* subversion/libsvn_fs_x/tree.c (construct_fs_id): New function to construct the ID object dynamically. (construct_fs_path_change): Update to call the new utility instead of using the info provided in CHANGE. Add a few pass-through parameters. (x_paths_changed): Update the next level caller.