Checkpoint. Reformulated construction of multi_array from

(const_)multi_array_ref.  Precursor to changing all other
multi_array-from-other-array constructors.


[SVN r22022]

libs/multi_array

@@ -1 +1 @@
-Subproject commit 4b6abe85132251c00fff3abea579aa7464cc5b44
+Subproject commit d9bbf4621380d7f5765b6f18b52006685d8a5d86