Changed grammar to allow Error objects which have no `program' component. That is, the program part is absent. Previously the program part had to be there even if the fields had null values.
Changed grammar to allow Error objects which have no `program' component.
That is, the program part is absent. Previously the program part had to be
there even if the fields had null values.


OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap4