Fix compilation error of Freestyle

Seems to be some sort of namespace conflict or so which is
solved by reshuffling the includes a bit.

source/blender/freestyle/intern/geometry/FastGrid.cpp

@@ -25,6 +25,8 @@
  *  \date 30/07/2002
  */
 
+#include <cstdlib>
+
 #include "FastGrid.h"
 
 #include "BKE_global.h"

source/blender/freestyle/intern/stroke/Chain.cpp

@@ -27,8 +27,8 @@
 
 #include "Chain.h"
 
-#include "../view_map/ViewMapAdvancedIterators.h"
 #include "../view_map/ViewMapIterators.h"
+#include "../view_map/ViewMapAdvancedIterators.h"
 
 namespace Freestyle {
 

source/blender/freestyle/intern/stroke/Curve.cpp

@@ -26,8 +26,8 @@
  */
 
 #include "Curve.h"
-#include "CurveAdvancedIterators.h"
 #include "CurveIterators.h"
+#include "CurveAdvancedIterators.h"
 
 #include "BKE_global.h"
 #include "BLI_utildefines.h"

source/blender/freestyle/intern/stroke/CurveIterators.h

@@ -43,7 +43,7 @@ namespace CurveInternal {
 class CurvePointIterator : public Interface0DIteratorNested
 { 
 public:
-	friend class Curve;
+	friend class Freestyle::Curve;
 
 public:
 	float _CurvilinearLength;

source/blender/freestyle/intern/stroke/Stroke.cpp

@@ -26,8 +26,8 @@
  */
 
 #include "Stroke.h"
-#include "StrokeAdvancedIterators.h"
 #include "StrokeIterators.h"
+#include "StrokeAdvancedIterators.h"
 #include "StrokeRenderer.h"
 
 #include "BKE_global.h"

source/blender/freestyle/intern/stroke/StrokeRep.cpp

@@ -26,8 +26,8 @@
  */
 
 #include "Stroke.h"
-#include "StrokeAdvancedIterators.h"
 #include "StrokeIterators.h"
+#include "StrokeAdvancedIterators.h"
 #include "StrokeRenderer.h"
 #include "StrokeRep.h"
 

source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.cpp

@@ -26,6 +26,8 @@
  *  \date 03/09/2002
  */
 
+#include <cstring>
+
 #include "Silhouette.h"
 #include "SilhouetteGeomEngine.h"
 

source/blender/freestyle/intern/view_map/ViewMap.cpp

@@ -28,8 +28,8 @@
 #include <float.h>
 
 #include "ViewMap.h"
-#include "ViewMapAdvancedIterators.h"
 #include "ViewMapIterators.h"
+#include "ViewMapAdvancedIterators.h"
 
 #include "../geometry/GeomUtils.h"
 

source/blender/freestyle/intern/view_map/ViewMapIO.cpp

@@ -25,6 +25,8 @@
  *  \date 09/01/2003
  */
 
+#include <limits.h>
+
 #include "ViewMapIO.h"
 
 #ifdef IRIX