unity and native osx bundles and frameworks build from the same project now

integrations/Unity3D/Assets/OBJ-IO/Plugins/Utils/Int32Converter.cs

@@ -0,0 +1,39 @@
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+[StructLayout(LayoutKind.Explicit)]
+public struct Int32Converter
+{
+    //------------------------------------------------------------------------------------------------------------
+    [FieldOffset(0)]
+    public int Value;
+    [FieldOffset(0)]
+    public byte Byte1;
+    [FieldOffset(1)]
+    public byte Byte2;
+    [FieldOffset(2)]
+    public byte Byte3;
+    [FieldOffset(3)]
+    public byte Byte4;
+
+    //------------------------------------------------------------------------------------------------------------
+    public Int32Converter(int value)
+    {
+        Byte1 = Byte2 = Byte3 = Byte4 = 0;
+        Value = value;
+    }
+
+    //------------------------------------------------------------------------------------------------------------
+    public static implicit operator Int32(Int32Converter value)
+    {
+        return value.Value;
+    }
+
+    //------------------------------------------------------------------------------------------------------------
+    public static implicit operator Int32Converter(int value)
+    {
+        return new Int32Converter(value);
+    }
+}