Rename configure.in to configure.ac

In the autoconf manual the recomended name for the autoconf input file
is configure.ac and not configure.in. Follow this recomendation.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=598768

configure.ac

@@ -58,7 +58,6 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([no])])
 
 #
 # For each of the libraries we build, we define the following
- 
 # substituted variables:
 #
 # foo_PACKAGES:     pkg-config packages this library requires
@@ -1258,10 +1257,10 @@ AM_CONDITIONAL(USE_MEDIALIB25, test $use_mlib25 = yes)
 AC_MSG_CHECKING(for x86 platform)
 case $host_cpu in
   i386|i486|i586|i686|i786|k6|k7)
-	use_x86_asm=yes
+        use_x86_asm=yes
         ;;
    *)
-  	use_x86_asm=no
+        use_x86_asm=no
 esac
 AC_MSG_RESULT($use_x86_asm)
 
@@ -1551,7 +1550,7 @@ if test "x$gdktarget" = "xx11"; then
 	    have_solaris_xinerama=false
 	    AC_CHECK_FUNC(XineramaGetInfo,
 	        [AC_CHECK_HEADER(X11/extensions/xinerama.h,
-  	  	    [have_solaris_xinerama=true], :,
+		    [have_solaris_xinerama=true], :,
 		    [#include <X11/Xlib.h>])])
 
             if $have_solaris_xinerama ; then
@@ -2030,7 +2029,7 @@ AC_CONFIG_COMMANDS([gdk/gdkconfig.h], [
 	cat > $outfile <<\_______EOF
 /* gdkconfig.h
  *
- * This is a generated file.  Please modify `configure.in'
+ * This is a generated file.  Please modify `configure.ac'
  */
 
 #ifndef GDKCONFIG_H

docs/RELEASE-HOWTO

@@ -29,9 +29,9 @@ Make sure that gtk-doc is the latest released version.
  3) In particular, if this is a major, stable, release, verify that
     README.in contains the relevant release notes and that the
     required versions of dependencies in INSTALL.in are in sync
-    with configure.in.
+    with configure.ac.
 
- 4) Verify that the version in configure.in has been bumped after the last
+ 4) Verify that the version in configure.ac has been bumped after the last
     release. (Note that this is critical, a slip-up here will cause the
     soname to change).
 
@@ -78,7 +78,7 @@ Make sure that gtk-doc is the latest released version.
 
     git push origin refs/tags/2.12.10
 
-13) Bump the version number in configure.in and commit and push this change
+13) Bump the version number in configure.ac and commit and push this change
 
 14) Upload the tarball to master.gnome.org and run install-module to transfer
     it to download.gnome.org. If you don't have an account on master.gnome.org,

docs/faq/gtk-faq.sgml

@@ -996,11 +996,11 @@ relevant packages. These are:</para>
 or on any GNU mirror.</para>
 
 <para>In order to use the powerful autoconf/automake scheme,
-you must create a configure.in which may look like:</para>
+you must create a configure.ac which may look like:</para>
 
 <programlisting role="C">
 dnl Process this file with autoconf to produce a configure script.
-dnl configure.in for a GTK+ based program
+dnl configure.ac for a GTK+ based program
 
 AC_INIT(myprg.c)
 AM_INIT_AUTOMAKE(mypkgname, 0.0.1)

docs/gtk-config.txt

@@ -152,10 +152,10 @@ and the AM_PATH_GTK macro. The program used here is the testinput.c
 You should first read the introductory portions of the automake
 Manual, if you are not already familiar with it.
 
-Two files are needed, 'configure.in', which is used to build the
+Two files are needed, 'configure.ac', which is used to build the
 configure script:
 
-==configure.in===
+==configure.ac===
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(testinput.c)
 

sanity_check

@@ -37,8 +37,8 @@ else
 	exit 1
 fi
 
-echo -n "configure.in..."
-if [ "x`grep $VERSION gtk+-$VERSION/configure.in | wc -l | awk -F' ' '{print $1}'`" == "x2" ]; then 
+echo -n "configure.ac..."
+if [ "x`grep $VERSION gtk+-$VERSION/configure.ac | wc -l | awk -F' ' '{print $1}'`" == "x2" ]; then
 	echo "ok" 
 else
 	echo "failed."