/*
 *  call-seq:
 *     dvector.eql?(other)  -> true or false
 *
 *  Returns <code>true</code> if _dvector_ and _other_ have the same content.  _other_  can either be a Dvector or a 1D Array of numbers.
 */ 
VALUE dvector_eql(VALUE ary1, VALUE ary2) {