Log Message:
Update to xf86-video-ast-0.85.0.

  Fix distcheck.
  ast 0.85.0
  Define AST_*_VERSION* using PACKAGE_VERSION_*
  ast: pciaccess conversion
  Rename .cvsignore to .gitignore
  Add *~ to .gitignore to skip patch/emacs droppings
  Compile warning fixes.
  compiler warning fixed
  modified:   ChangeLog
  Make sure used symbols are of public visibility
  Fixed can't get correct MCLK in some platforms