Revert "Use the recommended configure.ac instead configure.in"

This reverts commit 765f1087.

Renaming breaks automatic reconfiguring from make during git bisect.

autogen.sh

@@ -6,7 +6,7 @@ test -z "$srcdir" && srcdir=.
 
 PKG_NAME="vte"
 
-(test -f $srcdir/configure.ac \
+(test -f $srcdir/configure.in \
   && test -f $srcdir/README \
   && test -d $srcdir/src) || {
     echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"

configure.ac → configure.in

@@ -287,7 +287,7 @@ dnl                   [prohibit VTE from using deprecated GLib/Pango/ATK/GDK/GTK
 dnl   [],[enable_deprecation=$enable_maintainer_mode])
 dnl if test "x$enable_deprecation" = xyes; then
 dnl   AC_MSG_NOTICE([disabling deprecated GLIB/PANGO/GDK/ATK/GTK+ features])
-dnl
+dnl 
 dnl   AC_DEFINE([ATK_DISABLE_DEPRECATED],[1],[Disable deprecated features])
 dnl   AC_DEFINE([ATK_DISABLE_SINGLE_INCLUDES],[1],[Disable single includes])
 dnl   AC_DEFINE([G_DISABLE_DEPRECATED],[1],[Disable deprecated features])
@@ -553,7 +553,7 @@ if test "$enable_glade_catalogue" = "yes"; then
   AC_SUBST([GLADE_ICON_DIR])
   AC_SUBST([GLADE_MODULE_DIR])
 fi
-
+  
 AM_CONDITIONAL([ENABLE_GLADE_CATALOGUE],[test "$enable_glade_catalogue" = "yes"])
 
 # *************