INtroduce new log macros.

code/BlenderModifier.h

@@ -86,7 +86,7 @@ public:
         const Scene& /*in*/,
         const Object& /*orig_object*/
     ) {
-        ASSIMP_LOG_INFO_F("This modifier is not supported, skipping: "),orig_modifier.dna_type);
+        ASSIMP_LOG_INFO_F("This modifier is not supported, skipping: ",orig_modifier.dna_type );
         return;
     }
 };