SciTools/iris — pull request #1412 by dkillick (2014-10-23 15:03:41+00:00)
Title: Fix vector dims shape for scalar dims

Fix some broken logic in determining the vector dimensions' shape for a `FieldCollation` when a scalar dimension is input.

This caused the data for such dimensions to gain a length-one leading dimension, which was causing errors when building aux factories from fast-loaded structured FF files.