Update libsndfile to 1.0.29pre2+git

This pulls in MANY (over 890) changes compared to our
from our current 1.0.24 version.

lib-src/libsndfile/tests/sftest.c

@@ -0,0 +1,67 @@
+/*
+** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#else
+#include "sf_unistd.h"
+#endif
+
+#include <sndfile.h>
+
+#define	BUFFER_SIZE		(1024)
+
+
+static short buffer [BUFFER_SIZE] ;
+
+int
+main (int argc, char *argv [])
+{	SNDFILE	*file ;
+	SF_INFO sfinfo ;
+	int		k, count, max = 0, total = 0 ;
+
+	if (argc < 2)
+	{	printf ("Expecting input file name.\n") ;
+		return 0 ;
+		} ;
+
+	if (! (file = sf_open (argv [1], SFM_READ, &sfinfo)))
+	{	printf ("sf_open_read failed with error : ") ;
+		puts (sf_strerror (NULL)) ;
+		exit (1) ;
+		} ;
+
+	while ((count = sf_read_short (file, buffer, BUFFER_SIZE)))
+	{	for (k = 0 ; k < count ; k++)
+			if (abs (buffer [k]) > max)
+				max = abs (buffer [k]) ;
+		total += count ;
+		} ;
+
+	printf ("Total         : %d\n", total) ;
+	printf ("Maximun value : %d\n", max) ;
+
+	sf_close (file) ;
+
+	return 0 ;
+} /* main */
+