Another round of tweaks for spandsp. There should be no functional changes,

although quite a few things have changed in the test suite

libs/spandsp/tests/r2_mf_tx_tests.c

@@ -102,7 +102,7 @@ int main(int argc, char *argv[])
             outframes = sf_writef_short(outhandle, amp, len);
     }
 
-    if (sf_close(outhandle) != 0)
+    if (sf_close_telephony(outhandle))
     {
         fprintf(stderr, "    Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
         exit (2);