BUG: Revert the change 1.152

Source/cmLocalUnixMakefileGenerator3.cxx

@@ -1674,11 +1674,6 @@ cmLocalUnixMakefileGenerator3
       {
       objectName = relFromSource;
       }
-    else
-      {
-      // This is not relative to source or binary, so make it no path at all
-      objectName = cmSystemTools::GetFilenameName(objectName.c_str());
-      }
     }
 
   // Replace the original source file extension with the object file