Add missing fragment. Surely this kind of bug should be found when SWIG compiles? That is surely SWIG should generate error out if it can't find a fragment it has been asked to use?

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@8640 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Lib/typemaps/fragments.swg

@@ -332,6 +332,10 @@
 #endif
 %}
 
+%fragment("<math.h>","header") %{
+#include <math.h>
+%}
+
 %fragment("<wchar.h>","header") %{
 #include <wchar.h>
 %}