Gmp objects should be able to cope with Gmp objects instead of ints
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2751
Reported by Martin Nilsson, IDA nilsson@pike.ida.liu.se
Pike v7.3 release 14 running Hilfe v2.0 (Incremental Pike Frontend)
> 2->pow(Gmp.mpz(2));
-:1:Bad argument 1 to pow.
-:1:Expected: function(int : int)
-:1:Got : function(object(is 21) : void | mixed)