Renamed a variable to avoid a name conflict on windows which was pointed out by

Ahti Leppänen.

dlib/numerical_integration/integrate_function_adapt_simpson.h

@@ -13,7 +13,7 @@ namespace dlib
     template <typename T, typename funct>
     T impl_adapt_simp_stop(const funct& f, T a, T b, T fa, T fm, T fb, T is, int cnt)
     {
-        const int MAXINT = 500;
+        const int maxint = 500;
 
         T m   = (a + b)/2.0;
         T h   = (b - a)/4.0;
@@ -30,7 +30,7 @@ namespace dlib
         }
         else 
         {
-            if(cnt < MAXINT)
+            if(cnt < maxint)
             {
                 cnt = cnt + 1;