Blocked revisions 74853 via svnmerge

........
  r74853 | mark.dickinson | 2009-09-16 23:10:56 +0100 (Wed, 16 Sep 2009) | 5 lines

  Issue #6713:  Improve performance of str(n) and repr(n) for integers n
  (up to 3.1 times faster in tests), by special-casing base 10 in
  _PyLong_Format.  (Backport of r74851 from py3k.)
........