XTCE12 — XTCE issue: dimensionList in arrayParameterRef should be optional

Specifying array dimension sizes in arrayParameterRef should be optional. In telemetry arrays often include an on the fly 'count' in the data packet. Therefore this may come in conflict with the fixed sizes in the dimension list.

The other option is to clearly state in the annotation that the dimensionList is mearly an hint to the run-time software and more more processing will need to be done to ascertain the true size.

Finally, a further option would be to have the dimensionList optionally look up the dimension size using a InstanceRef to another parameter in the data stream...

Merge with 14455 resolution.

A resolution of 14455 would conflict with a resolution for this issue, and 14455 is the preferred approach to array sizing.