-> Fix for 64 bit alignment of Vertex colors in bmesh

Vertex color structure in bmesh needed to be padded for
8 byte aligned memory access.

source/blender/makesdna/DNA_meshdata_types.h

@@ -82,6 +82,7 @@ typedef struct MLoopUV{
 
 typedef struct MLoopCol{
 	char a, r, g, b;
+	int pad;  /*waste!*/
 }MLoopCol;
 
 typedef struct MSticky {