include config.h in all sources

After we've been hit by Large File Support problems several times in
the past week (which only occur on 32 bit platforms, which I don't
have), this is yet another attempt to fix the issue.

src/input/archive_input_plugin.c

@@ -17,6 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "config.h"
 #include "input/archive_input_plugin.h"
 #include "archive_api.h"
 #include "archive_list.h"

src/input/curl_input_plugin.c

@@ -17,10 +17,10 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "config.h"
 #include "input/curl_input_plugin.h"
 #include "input_plugin.h"
 #include "conf.h"
-#include "config.h"
 #include "tag.h"
 #include "icy_metadata.h"
 #include "glib_compat.h"

src/input/mms_input_plugin.c

@@ -17,6 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "config.h"
 #include "input/mms_input_plugin.h"
 #include "input_plugin.h"