[pan2] Rename configure.in -> configure.ac

[Petr Kovář <pmkovar src gnome org>]

commit c186c9f24f6497b14dddee74e10c42e9d5d6b57c
Author: Petr Kovar <pknbe volny cz>
Date:   Fri Jan 24 18:26:06 2014 +0100

    Rename configure.in -> configure.ac

 .gitattributes               |    2 +-
 configure.in => configure.ac |    0
 2 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/.gitattributes b/.gitattributes
index 87f88a3..2418181 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1 @@
-configure.in export-subst
+configure.ac export-subst
diff --git a/configure.in b/configure.ac
similarity index 100%
rename from configure.in
rename to configure.ac