Sun Dec 13 12:28:12 CET 2009

Mapping numbers

Calling the constructors is straightforward.  However, automaticly
converting numbers will not suffice, as Java distinguishes between
different types.  Also, invoking a specific constructor/convertor and
then automatically converting Java->Scheme rep also causes problems.

So, let's _not_ automatically convert back to Scheme rep, but make
this a 2nd operation.

This would also eliminate GC restart problems.