Sort includes.

Signed-off-by: Bård Skaflestad <Bard.Skaflestad@sintef.no>

uniquepoints.c

@@ -33,12 +33,12 @@
 */
 
 #include <assert.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include <limits.h>
 #include <float.h>
+#include <limits.h>
+#include <math.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 
 #include "preprocess.h"