Fix building other source files from the 11101806ce change.

src/libespeak-ng/mbrowrap.c

 
 #include "config.h"
 
+#include <espeak-ng/espeak_ng.h>
+
 #include "speech.h"
 
 #include <stdarg.h>

src/libespeak-ng/wave.c

 
 #include "config.h"
 
+#include <espeak-ng/espeak_ng.h>
+
 #include "speech.h"
 
 #include <stdbool.h>

src/libespeak-ng/wave_pulse.c

 //
 #include "config.h"
 
+#include <espeak-ng/espeak_ng.h>
+
 #include "speech.h"
 
 #include <stdbool.h>

src/libespeak-ng/wave_sada.c

 /*
  * Copyright (C) 2008, Sun Microsystems, Inc.
- * Copyright (C) 2015 Reece H. Dunn
+ * Copyright (C) 2015-2016 Reece H. Dunn
  * eSpeak driver for Solaris Audio Device Architecture (SADA)
  * Written by Willie Walker, based on the eSpeak PulseAudio driver
  * from Gilles Casse
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
+#include <espeak-ng/espeak_ng.h>
+
 #include "speech.h"
 
 #include <errno.h>

src/speak-ng.c

 
 #include "config.h"
 
+#include <espeak-ng/espeak_ng.h>
+
 #include "speech.h"
 
 #include <stdbool.h>