/*
* call-seq:
* dvector.push(number, ... ) -> dvector
*
* Append---Pushes the given number(s) on to the end of this vector.
*
* a = Dvector[ 1, 2, 3 ]
* a.push(4, 5, 6) -> Dvector[1, 2, 3, 4, 5, 6]
*/ VALUE dvector_push_m(int argc, VALUE *argv, VALUE ary) {