Issue 5258: Add support for no data source                                                                                                                                                                          (dais-ftf)
Source: ABB Power Technologies, Power Automation & Substat (Mr. Lars-Ola Osterlund, lars-ola.g.osterlund@se.abb.com)
Nature: Uncategorized Issue
Severity: 
Summary: Add support for no data sourceData points that have no data source may exist. Add a new source defiontion to tell this. const	OPCQuality EXQ_SOURCE_NONE	= 0x0000;
Resolution: const OPCQuality EXQ_SOURCE_NONE	= 0x0000;
Revised Text: Refer to comments in [1]
·	LOO17, LOO28 in section 3.1.5

Actions taken:
May 2, 2002: received issue
October 23, 2002: closed issue
Discussion: 
Updated in DAISCommon.idl
End of Annotations:=====

This is issue # 5258

Add support for no data source

Add support for no data sourceData points that have no data source may
exist. Add a new source defiontion to tell this. 
const  OPCQuality EXQ_SOURCE_NONE  = 0x0000;