stole set_[core|hll]_op_result_type, attach_result_type from jvm
stole set_[core|hll]_op_result_type, attach_result_type from jvm

cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp