Scenario:
 - values already exist on the record
 - record is updated with users that can not update all fields
 - only values for updatable fields are provided

Access control was moved from generalValueSetValidation to procCreate/procUpdate
to allow return of record value error set.

Existing values from fields with update-deny set are copied to updating set
to ensure proper handling by RVS's Merge fn().

Errors are now typified, node.js stack from error is accepted and converted

check*Constraints fn now generates list of PKs when ensuring constraints