ars_SetSchema(ctrl, name, schemaHash)schemaHash before calling this routine.
      name is the schema name.
      
schemaHash is a partially assigned
      Schema Attributes hash. 
      
Example:
This example copies an existing schema to a new schema. I.e. it simply re-saves the schema under a new name.
      ($a = ars_GetSchema($c, "AL-foobar")) ||
	    die $ars_errstr;
      $a->{name} = "Copy of ".$a->{name};
      ars_SetSchema($c, $name, $a) || die $ars_errstr;
      
This function was introduced in version 1.90 of ARSperl