FARRAGO:  tweak JmiChangeSet to allow subclasses to control which objects undergo modification validation processing
FARRAGO:  tweak JmiChangeSet to allow subclasses to control
which objects undergo modification validation processing

[git-p4: depot-paths = "//open/lu/dev/": change = 9324]

LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb