Added license for CheckFunctionExistsMath.cmake

cmake/modules/CheckFunctionExistsMath.cmake

@@ -14,6 +14,16 @@
 #  CMAKE_REQUIRED_INCLUDES = list of include directories
 #  CMAKE_REQUIRED_LIBRARIES = list of libraries to link
 
+#=============================================================================
+# Copyright 2002-2011 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
 
 MACRO(CHECK_FUNCTION_EXISTS_MATH FUNCTION VARIABLE)
   IF("${VARIABLE}" MATCHES "^${VARIABLE}$")