Blocked revisions 71723-71724 via svnmerge

........
  r71723 | mark.dickinson | 2009-04-18 21:17:52 +0100 (Sat, 18 Apr 2009) | 7 lines

  The SSE2 detection and enabling could potentially cause
  problems for binary distributions of Python in situations
  where the build machine has SSE2 but the target machine
  does not.

  Therefore, don't enable SSE2 instructions automatically on x86.
........
  r71724 | mark.dickinson | 2009-04-18 21:19:17 +0100 (Sat, 18 Apr 2009) | 2 lines

  Revert accidental changes to Objects/floatobject.c
........