Add a simple switch to enable/disable disassemble debug
Add a simple hack that makes it "almost" functional on i586

  With this change the build finishes on i586, but x86_64 still fails
the same way.
  "make check" goes quite far before the first failure:

/bin/sh './testsuite'

Regression tests.

  1: arrays.st                                       ok
  2: classes.st                                      ok
  3: blocks.st                                       ok
  4: sets.st                                         ok
  5: processes.st                                    ok
  6: exceptions.st                                   ok
  7: intmath.st                                      ok
  8: floatmath.st                                    ok
  9: dates.st                                        ok
 10: objects.st                                      ok
 11: strings.st                                      ok
 12: chars.st                                        ok
 13: delays.st                                       ok
 14: geometry.st                                     ok
 15: cobjects.st                                     ok
 16: compiler.st                                     ok
 17: fileext.st                                      ok
 18: mutate.st                                       ok
 19: getopt.st                                       ok
 20: quit.st                                         ok
 21: pools.st                                        ok
 22: shape.st                                        ok
 23: streams.st                                      ok
 24: xlat.st                                         ok

Other simple tests.

 25: ackermann.st                                    ok
 26: ary3.st                                         ok
 27: except.st                                       ok
 28: fibo.st                                         ok
 29: hash.st                                         ok
 30: hash2.st                                        ok
 31: heapsort.st                                     ok
 32: lists.st                                        ok
 33: lists1.st                                       ok
 34: lists2.st                                       ok
 35: matrix.st                                       ok
 36: methcall.st                                     ok
 37: nestedloop.st                                   ok
 38: objinst.st                                      ok
 39: prodcons.st                                     ok
 40: random-bench.st                                 ok
 41: sieve.st                                        ok
 42: strcat.st                                       ok
 43: stcompiler.st                                   ok

Basic packages.

 44: SUnit                                           ok
 45: Parser                                          ok

ANSI compliancy tests.

 46: ArrayANSITest                                   ok
 47: ArrayFactoryANSITest                            FAILED (testsuite.at:83)
 48: BagANSITest                                     FAILED (testsuite.at:84)
 49: BagFactoryANSITest                              FAILED (testsuite.at:85)
 50: BooleanANSITest                                 FAILED (testsuite.at:86)
 51: ByteArrayANSITest                               ok
 52: ByteArrayFactoryANSITest                        FAILED (testsuite.at:88)
 54: CharacterFactoryANSITest                        ok
[...]