configure.ac: Update the version

Forgot to update the version before the release - oops.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
configure.ac: Enable large file support

Check for flags and other things needed for large file support. While
LFS is something dh-exec should not be concerned about, this silences a
lintian warning and is nicer than an override.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>