commit b71c7dc9ddd6997be49ed6aaabf99a067e2c0388
  Author: Victor Stinner <victor.stinner@gmail.com>
  Date:   Fri Oct 10 11:55:41 2014 +0200

    Issue #22591: Drop support of MS-DOS

    Drop support of MS-DOS, especially of the DJGPP compiler (MS-DOS port of GCC).

    Today is a sad day. Good bye MS-DOS, good bye my friend :'-(