Fix for bug #24218 (https://gna.org/bugs/?24218).
This is the incorrect labelling of alignment tensors by the align_tensor.matrix_angles user function when a subset of tensors is specified. The logic for the labels was expanded from being only for all tensors to handling subsets.
Authored by: bugman 2015-12-21
Parent: [r28156]
Child: [r28158]
