Improve backwards compatibility in C#/Java std::array wrappers

For users who have typemaps for the parameters in the setitem or set methods.

Author: wsfulton

Lib/csharp/std_array.i

@@ -192,9 +192,9 @@
         else
           throw std::out_of_range("index");
       }
-      void setitem(int index, const_reference value) throw (std::out_of_range) {
+      void setitem(int index, const_reference val) throw (std::out_of_range) {
         if (index>=0 && index<(int)$self->size())
-          (*$self)[index] = value;
+          (*$self)[index] = val;
         else
           throw std::out_of_range("index");
       }

Lib/java/std_array.i

@@ -31,10 +31,10 @@ namespace std {
         else
           throw std::out_of_range("array index out of range");
       }
-      void set(int i, const value_type& value) throw (std::out_of_range) {
+      void set(int i, const value_type& val) throw (std::out_of_range) {
         int size = int(self->size());
         if (i>=0 && i<size)
-          (*self)[i] = value;
+          (*self)[i] = val;
         else
           throw std::out_of_range("array index out of range");
       }