mpeglib: change to use SunOS API audioIO backend for NetBSD

On NetBSD, SunOS compatible native API should be used instead of OSS audio
emulator layer.

Signed-off-by: OBATA Akio <obache@wizdas.com>
(cherry picked from commit 6dfc5bfda8)

mpeglib/lib/util/audio/audioIO.cpp

@@ -28,6 +28,8 @@
 #ifdef OS_BSD
 #ifdef __OpenBSD__
   #include "audioIO_sndio.cpp"
+#elif defined(__NetBSD__)
+  #include "audioIO_SunOS.cpp"
 #else
   #include "audioIO_Linux.cpp"
 #endif

mpeglib/lib/util/audio/audioIO_SunOS.cpp

@@ -8,13 +8,19 @@
  */
 
 #include <sys/types.h>
+#ifdef OS_SunOS
 #include <sys/stropts.h>
+#else
+#include <sys/ioctl.h>
+#endif
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <sys/audioio.h>
+#ifdef OS_BSD
+#define uchar_t u_char
+#endif
 #include "audioIO.h"
-#include <iostream.h>
 
 /* declare these static to effectively isolate the audio device */