Allow whitespace at the beginning and after the union operator in XPath expressions of identity constraints
Allow whitespace at the beginning and after the union operator in XPath expressions of identity constraints

git-svn-id: 3ec853389310512053d525963cab269c063bb453@389118 13f79535-47bb-0310-9956-ffa450edef68

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