configure: Break single-line ac_config_files list into multiple lines.

[H. Verbeet]

On 24/02/07, Saulius Krasuckas <saulius.krasuckas at ieee.org> wrote:
> This long line breaks automated rebasing of one of testing branches on
> (namely ntoskrnl) on my box every time a new dll or program is added.
> That's because I need to merge conflict for this line by my hand.
>
> And I am not sure what stops us from keeping "ac_config_files" list
> multiline, so merging in future could be automatical.
>
> ---
>  configure |  326 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 files changed, 325 insertions(+), 1 deletions(-)
>
configure is a generated file.