Add some numeric tests

svn path=; revision=7984
Added some testing for numeric type support

svn path=; revision=7985
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svn path=; revision=7986
Some more testing for numerics support

svn path=; revision=7987
Numerics support

svn path=; revision=7988
Numerics support. Clean up some flotsam, also.

svn path=; revision=7989
Convert doubles to_python.

svn path=; revision=7990
Remove unimplemented Tuple constructors, and add some others for convenience.

svn path=; revision=7991
Numerics support.

svn path=; revision=7992
Factor out exception-handling. Add numerics support.

svn path=; revision=7993
Fix description of ComputedAttribute feature for accuracy.

svn path=; revision=7994
Removed old branches.

svn path=; revision=38550