decoder/{flac,vorbis}: include config.h for LFS

Allow those plugins to open large files on 32 bit platforms.

src/decoder/flac_plugin.c

@@ -17,6 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "config.h" /* must be first for large file support */
 #include "_flac_common.h"
 #include "flac_metadata.h"
 

src/decoder/oggflac_plugin.c

@@ -21,6 +21,7 @@
  * OggFLAC support (half-stolen from flac_plugin.c :))
  */
 
+#include "config.h" /* must be first for large file support */
 #include "_flac_common.h"
 #include "_ogg_common.h"
 #include "flac_metadata.h"

src/decoder/vorbis_plugin.c

@@ -19,6 +19,7 @@
 
 /* TODO 'ogg' should probably be replaced with 'oggvorbis' in all instances */
 
+#include "config.h" /* must be first for large file support */
 #include "_ogg_common.h"
 #include "config.h"
 #include "uri.h"