Merge pull request rmanohar#29 from jakobj/fix/set-avoid-int

Looks good, now that negative bigints are read correctly.

Author: rmanohar

main.cc

@@ -774,8 +774,7 @@ int process_set (int argc, char **argv)
  else if (type == 1) {
  BigInt *otmp = glob_sim->getInt (offset);
  BigInt rd = BigInt::sscan (argv[2]);
- val = atoi (argv[2]);
- if (val < 0) {
+ if (rd.isNegative()) {
  fprintf (stderr, "Integers are unsigned.\n");
  return LISP_RET_ERROR;
  }