Updated modules

[Mike Griebling <grieblm@trt.allied.com>]

I've placed updated Calendar, Longreal, Real, and Integers modules
to cognac.informatik.uni-kl.de/pub/ooc/incoming/lib.  These modules
fix a minor bug when empty strings were translated to numbers.

A new module has also been uploaded which implements arbitrary-precision
integers which has a similar interface to the module also being provided
with the Oberon-F compiler.  Here is the readme file:

Here is a module which defines arbitrarily-long integers.  This could be used
in cryptographic applications and in simulating 64-bit integers when none are
available on your computer.  This module works with the new OOC library. 

If you want to check whether this module was correctly installed, just set the
TEST flag to TRUE and build the Integers module.  Then check if the output
matches the output in the Test/Integers.lis file.

Not a lot of testing has been done on this module but I believe that it is
fully functional.  If there are any bugs, please report them along with a
sample program which could be used to reproduce them.

<Michael Griebling grieblm@inforamp.net>