Fix `IntegerTest`
Do not use #deepCopy with desctructive operations, #deepCopy on numbers
is an no-op (they're immutable, except internal destructive helpers)
@REM -------
@REM make using lcc compiler
@REM type lcmake, and wait...
@REM do not edit - automatically generated from ProjectDefinition
@REM -------
make.exe -N -f bc.mak USELCC=1 %1 %2