Update FLAC to 1.3.1

include/FLAC/export.h

Index: include/FLAC/export.h
diff --git a/include/FLAC/export.h b/include/FLAC/export.h
index a525f29c1e50e24192814a667125c989ba81b4b6..9cc9e137fbfd7e04f92d6c4972935db8a5530c5e 100644
--- a/include/FLAC/export.h
+++ b/include/FLAC/export.h
@@ -1,5 +1,6 @@
 /* libFLAC - Free Lossless Audio Codec library
- * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
+ * Copyright (C) 2000-2009  Josh Coalson
+ * Copyright (C) 2011-2014  Xiph.Org Foundation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -55,25 +56,30 @@
  * \{
  */
 
-#if defined(FLAC__NO_DLL) || !defined(_MSC_VER)
+#if defined(FLAC__NO_DLL)
 #define FLAC_API
 
+#elif defined(_MSC_VER)
+#ifdef FLAC_API_EXPORTS
+#define	FLAC_API __declspec(dllexport)
 #else
+#define FLAC_API __declspec(dllimport)
+#endif
+
+#elif defined(FLAC__USE_VISIBILITY_ATTR)
+#define FLAC_API __attribute__ ((visibility ("default")))
 
-#ifdef FLAC_API_EXPORTS
-#define	FLAC_API	_declspec(dllexport)
 #else
-#define FLAC_API	_declspec(dllimport)
+#define FLAC_API
 
 #endif
-#endif
 
 /** These #defines will mirror the libtool-based library version number, see
- * http://www.gnu.org/software/libtool/manual.html#Libtool-versioning
+ * http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning
  */
-#define FLAC_API_VERSION_CURRENT 10
+#define FLAC_API_VERSION_CURRENT 11
 #define FLAC_API_VERSION_REVISION 0 /**< see above */
-#define FLAC_API_VERSION_AGE 2 /**< see above */
+#define FLAC_API_VERSION_AGE 3 /**< see above */
 
 #ifdef __cplusplus
 extern "C" {