Subnormal LargeIntegers not converted by adding 0
Converting a subnormal LargeInteger (a LargeInteger in the range of a SmallInteger)
to a SmallInteger should be done by adding 0 or by multiplying by 1. Adding
0 did not work in 3.0 and 3.0.1.
To convert a subnormal LargeInteger, multiply by 1.