WL#2886: Allow client library to get error for a result set and still receive other result sets

Affects: Server-7.1   —   Status: Assigned   —   Priority: Medium

The task is to change the client library so that one can get an 
error for a result set but still receive other result sets. 

This feature is needed in stored procedures when we want to abort 
a result set and send another result set through a handler.