Yet another OOP update

[Robert T. Short]

Attached is a patch that will fix object load to call the class 
constructor.  I also fixed the load_ascii function and fixed "struct" to 
return the underlying struct when the argument is an object.

I tested this on some fairly complex objects and it seems to work for 
-text, -hdf5 and -v6 files.  I don't like the way it fails when there 
are errors (e.g. a constructor with arguments) and will make it nicer, 
but this works quite nicely.

Bob
--
Robert T. Short
PhaseLocked Systems
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