Attributes v2

Made corrections from first review in...
-Add get attribute value (CSFPGAV) to the icsf layer.
-Add token specific get attribute value clal to ock and icsf.
-Let calling program determine if it wants a sequence of a sequence when ber encoding attributes.
-Add set attribute value to the icsf layer.
-Add token specific set attribute value to ock and icsf.