Update opus from 1.1 to 1.1.4

Define FLOAT_APPROX in Makefile and misc/msvc12/quake3.vcxproj.

code/opus-1.1/celt/cpu_support.h

@@ -31,7 +31,8 @@
 #include "opus_types.h"
 #include "opus_defines.h"
 
-#if defined(OPUS_HAVE_RTCD) && defined(OPUS_ARM_ASM)
+#if defined(OPUS_HAVE_RTCD) && \
+  (defined(OPUS_ARM_ASM) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR))
 #include "arm/armcpu.h"
 
 /* We currently support 4 ARM variants:
@@ -42,6 +43,22 @@
  */
 #define OPUS_ARCHMASK 3
 
+#elif (defined(OPUS_X86_MAY_HAVE_SSE) && !defined(OPUS_X86_PRESUME_SSE)) || \
+  (defined(OPUS_X86_MAY_HAVE_SSE2) && !defined(OPUS_X86_PRESUME_SSE2)) || \
+  (defined(OPUS_X86_MAY_HAVE_SSE4_1) && !defined(OPUS_X86_PRESUME_SSE4_1)) || \
+  (defined(OPUS_X86_MAY_HAVE_AVX) && !defined(OPUS_X86_PRESUME_AVX))
+
+#include "x86/x86cpu.h"
+/* We currently support 5 x86 variants:
+ * arch[0] -> non-sse
+ * arch[1] -> sse
+ * arch[2] -> sse2
+ * arch[3] -> sse4.1
+ * arch[4] -> avx
+ */
+#define OPUS_ARCHMASK 7
+int opus_select_arch(void);
+
 #else
 #define OPUS_ARCHMASK 0
 
@@ -50,5 +67,4 @@ static OPUS_INLINE int opus_select_arch(void)
   return 0;
 }
 #endif
-
 #endif