SILK fixes following last codec WG meeting

decoder:
- fixed incorrect scaling of filter states for the smallest quantization
  step sizes
- NLSF2A now limits the prediction gain of LPC filters

encoder:
- increased damping of LTP coefficients in LTP analysis
- increased white noise fraction in noise shaping LPC analysis
- introduced maximum total prediction gain.  Used by Burg's method to
  exit early if prediction gain is exceeded.  This improves packet
  loss robustness and numerical robustness in Burg's method
- Prefiltered signal is now in int32 Q10 domain, from int16 Q0
- Increased max number of iterations in CBR gain control loop from 5 to 6
- Removed useless code from LTP scaling control
- Optimization: smarter LPC loop unrolling
- Switched default win32 compile mode to be floating-point

resampler:
- made resampler have constant delay of 0.75 ms; removed delay
  compensation from silk code.
- removed obsolete table entries (~850 Bytes)
- increased downsampling filter order from 16 to 18/24/36 (depending on
  frequency ratio)
- reoptimized filter coefficients

win32/config.h

@@ -1,21 +1,21 @@
-#ifndef CONFIG_H
-#define CONFIG_H
-
-#define CELT_BUILD            1
-
-#define restrict 
-#define inline __inline
-
-#define USE_ALLOCA            1
-
-/* Comment out the next line for floating-point code */
-/*#define FIXED_POINT           1 */
-
-#define OPUS_BUILD            1
-
-/* Get rid of the CELT VS compile warnings */
-#if 1
-#pragma warning(disable : 4996)/* This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. */
-#endif
-
-#endif CONFIG_H
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#define CELT_BUILD            1
+
+#define restrict 
+#define inline __inline
+
+#define USE_ALLOCA            1
+
+/* Comment out the next line for floating-point code */
+/*#define FIXED_POINT           1 */
+
+#define OPUS_BUILD            1
+
+/* Get rid of the CELT VS compile warnings */
+#if 1
+#pragma warning(disable : 4996)/* This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. */
+#endif
+
+#endif CONFIG_H