DOM Fix: getAttributeNS should return zerolength string attribute value if the attribute is not found
DOM Fix: getAttributeNS should return zerolength string attribute value if the attribute is not found


git-svn-id: 3ec853389310512053d525963cab269c063bb453@174213 13f79535-47bb-0310-9956-ffa450edef68

AaronNGray/xerces,AaronNGray/xerces,AaronNGray/xerces,AaronNGray/xerces