Patch ping

[Zdenek Dvorak]

Hello,

http://gcc.gnu.org/ml/gcc-patches/2006-01/msg01424.html
  -- patch for PR 23855, to produce more efficient and
     easier to optimize code for nested for-loops

http://gcc.gnu.org/ml/gcc-patches/2006-03/msg00345.html
  -- makes affine combinations use the new double_int
     infrastructure

Zdenek