util.h: restore BSD license for Facebook Open-Source

programs/util.h

@@ -1,21 +1,13 @@
-/*
-    util.h - utility functions
-    Copyright (C) 2016-present, Przemyslaw Skibinski, Yann Collet
-
-    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.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
+/**
+ * util.h - utility functions
+ * 
+ * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #ifndef UTIL_H_MODULE
 #define UTIL_H_MODULE
@@ -25,17 +17,6 @@ extern "C" {
 #endif
 
 
-/* **************************************
-*  Compiler Options
-****************************************/
-#if defined(_MSC_VER)
-#  define _CRT_SECURE_NO_WARNINGS   /* Disable Visual Studio warning messages for fopen, strncpy, strerror */
-#  define _CRT_SECURE_NO_DEPRECATE  /* VS2005 */ 
-#  if (_MSC_VER <= 1800)            /* (1800 = Visual Studio 2013) */
-#    define snprintf sprintf_s      /* snprintf unsupported by Visual <= 2013 */
-#  endif
-#endif
-
 
 /*-****************************************
 *  Dependencies