[build] Use autoheader & config.h

Signed-off-by: Julien Danjou <julien@danjou.info>

common/draw.h

@@ -29,6 +29,7 @@
 
 #include <xcb/xcb.h>
 
+#include "config.h"
 #include "common/util.h"
 #include "common/list.h"
 #include "common/xutil.h"

common/version.c

@@ -22,6 +22,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 
+#include "config.h"
 #include "common/version.h"
 #include "awesome-version-internal.h"
 

configure.ac

@@ -25,6 +25,7 @@ foreign
 std-options
 subdir-objects
 ])
+AC_CONFIG_HEADER([config.h])
 
 AC_DEFINE_UNQUOTED([AWESOME_RELEASE], [m4_esyscmd([./build-utils/package-codename . codename-stamp])], [release code name])
 

lua.c

@@ -11,22 +11,13 @@
 /* XStringToKeysym() */
 #include <X11/Xlib.h>
 
+#include "config.h"
 #include "structs.h"
 #include "lua.h"
-#include "tag.h"
-#include "statusbar.h"
-#include "widget.h"
-#include "placement.h"
-#include "client.h"
 #include "window.h"
-#include "mouse.h"
-#include "statusbar.h"
-#include "screen.h"
-#include "titlebar.h"
+#include "tag.h"
+#include "client.h"
 #include "layouts/tile.h"
-#include "layouts/floating.h"
-#include "common/util.h"
-#include "common/xutil.h"
 
 extern AwesomeConf globalconf;
 extern bool running;