Record XMLNode information in policy decision response

src/hed/libs/security/ArcPDP/EvaluationCtx.cpp

src/hed/libs/security/ArcPDP/EvaluationCtx.h

src/hed/libs/security/ArcPDP/Evaluator.cpp

src/hed/libs/security/ArcPDP/Response.h

src/hed/libs/security/ArcPDP/Result.h

src/hed/libs/security/ArcPDP/attr/AnyURIAttribute.h

src/hed/libs/security/ArcPDP/attr/AttributeValue.h

src/hed/libs/security/ArcPDP/attr/DateTimeAttribute.cpp

src/hed/libs/security/ArcPDP/attr/DateTimeAttribute.h

src/hed/libs/security/ArcPDP/attr/StringAttribute.h

src/hed/libs/security/ArcPDP/attr/X500NameAttribute.h

src/hed/libs/security/ArcPDP/policy/ArcPolicy.cpp

src/hed/libs/security/ArcPDP/policy/ArcPolicy.h

src/hed/libs/security/ArcPDP/policy/ArcRule.cpp

src/hed/libs/security/ArcPDP/policy/ArcRule.h

src/hed/libs/security/ArcPDP/policy/Policy.h