Merge pull request #474 from fodinabor/VS2012Fix

Visual Studio 2012 Build was broken - it still didn't support round...

Core/Contents/Include/PolyGlobals.h

@@ -86,9 +86,8 @@ THE SOFTWARE.
 
 typedef double Number;
 
-#ifdef _WINDOWS
 #ifdef _MSC_VER
-#if _MSC_VER<=1600
+#if _MSC_VER<=1700
 
 #include <cmath>	//cmath for "round / floor"
 
@@ -97,7 +96,6 @@ inline int round(Number x) {
 }
 #endif 
 #endif
-#endif
 
 #define RANDOM_NUMBER ((Number)rand()/(Number)RAND_MAX)