configure.ac: Require a2x when building from git
commit1f118a69b06b3f8f553ffdda9367045f65875034
authorToni Gundogdu <legatvs@gmail.com>
Wed, 3 Jul 2013 21:16:57 +0000 (4 00:16 +0300)
committerToni Gundogdu <legatvs@gmail.com>
Wed, 3 Jul 2013 21:18:05 +0000 (4 00:18 +0300)
tree026ef7fea8d9c77fdb2286c43700e94526da8ce6
parent01f8b03f64ae828b0492f46598978de9998a23f1
configure.ac: Require a2x when building from git

Otherwise make in the doc/man7 will fail as the manpages are missing.
Backported from quvi (7301c459).

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
configure.ac