[Ecls-list] Loop when dividing by 0

[Alexander Gavrilov]

> ECL 9.10.2 build fine on 64-bit Debian Lenny.  However, typing
> 
> (TRUNCATE 1 0)
> 
> apparently enters into infinite loop.

That's because it signals an integer division exception
using SIGFPE, which is then arbitrarily ignored because
floating point exceptions are not explicitly enabled.
Thus the same code is executed again and again.

This does not happen with "ecl --trap-fpe"

Alexander