Companion tools are no longer experimental

Signed-off-by: Ray Donnelly <mingw.android@gmail.com>
Message-Id: <3e204a5cf9648db53a6a.1392920970@advancedsearch.virginmedia.com>
Patchwork-Id: 322301

 #!/bin/sh

 set -e

 printf "Running autoconf...\n"

 autoconf -Wall --force

 printf "Done. You may now run:\n    ./configure\n"