due to a missing function prototype. Modified the GDS output
flow to always output instance IDs as a property, not just in the
non-default case. The property has been used for many years and
appears to be accepted by all tools reading GDS, so there is no
downside to always generating this output. This has the upside
that default instance names don't get scrambled by going from
magic to GDS and back to magic.
Tim Edwards