[libwnck] [build] Rename configure.in to configure.ac

[Vincent Untz <vuntz src gnome org>]

commit db0d4206749ab214cfcabcf35ac355153e971bc1
Author: Vincent Untz <vuntz gnome org>
Date:   Wed Sep 8 17:15:50 2010 +0200

    [build] Rename configure.in to configure.ac

 autogen.sh                   |    2 +-
 configure.in => configure.ac |    0
 2 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 01f521f..ef00210 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -8,7 +8,7 @@ PKG_NAME="libwnck"
 REQUIRED_AUTOMAKE_VERSION=1.9
 REQUIRED_M4MACROS=introspection.m4
 
-(test -f $srcdir/configure.in \
+(test -f $srcdir/configure.ac \
   && test -f $srcdir/libwnck/libwnck.h) || {
     echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"
     echo " top-level $PKG_NAME directory"
diff --git a/configure.in b/configure.ac
similarity index 100%
rename from configure.in
rename to configure.ac