#5 assignment problems,SOURCE MISSING

[Ondrea Spilka]

When assigning to the same MathFP instance, the
content isn't preserved
f.e.
MathFP n = new MathFP(1); // n == 1
n.set(n); // n is zero

This causes serious problems when constructing general
LR-parser by JACC. Assignment must be checked against
identity, so the code is larger.

Also SOURCE IS MISSING, so I spend 4 hours catching
the bug. Someone would have also to lighten the code,
it's important when developing for CLDC.