[monitoring-plugins] Rename configure.in to configure.ac

[Holger Weiss]

 Module: monitoring-plugins
 Branch: master
 Commit: acca8c0a7174c4a348e9e05c20dc26f57afe8b27
 Author: Holger Weiss <holger at zedat.fu-berlin.de>
   Date: Fri Feb 21 16:12:12 2014 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=acca8c0

Rename configure.in to configure.ac

The old name has been deprecated years ago.  The Autoconf documentation
says:

| Previous versions of Autoconf promoted the name configure.in, which is
| somewhat ambiguous (the tool needed to process this file is not
| described by its extension), and introduces a slight confusion with
| config.h.in and so on (for which `.in' means "to be processed by
| configure").  Using configure.ac is now preferred.

[ https://www.gnu.org/software/autoconf/manual/autoconf.html ]

---

 configure.in => configure.ac | 0
 1 file changed, 0 insertions(+), 0 deletions(-)

diff --git a/configure.in b/configure.ac
similarity index 100%
rename from configure.in
rename to configure.ac