Use copy_directory instead of copy when moving signed binary.

cmake/modules/FindCodeSign.cmake

@@ -32,7 +32,7 @@ MACRO(EMGU_SIGN_BINARY target file_full_path)
       COMMAND ${CMAKE_COMMAND} -E make_directory ${WIN_SIGNED_BINARY_DIRECTORY}
       COMMAND ${EMGU_SIGN_EXECUTABLE} "${WIN_BINARY_FULL_PATH}" "${WIN_SIGNED_BINARY_DIRECTORY}"
       #COMMAND ${CMAKE_COMMAND} -E copy ${SIGNED_BINARY_DIRECTORY}/${EMGU_SIGN_FILE_NAME} ${EMGU_SIGN_WORKING_DIR}
-	  COMMAND ${CMAKE_COMMAND} -E copy ${SIGNED_BINARY_DIRECTORY}/* ${EMGU_SIGN_WORKING_DIR}
+	  COMMAND ${CMAKE_COMMAND} -E copy_directory ${SIGNED_BINARY_DIRECTORY} ${EMGU_SIGN_WORKING_DIR}  # Need this to copy the dlls that may have been overrided in other compile operation.
       WORKING_DIRECTORY "${EMGU_SIGN_WORKING_DIR}"
       COMMENT "Signing ${file_full_path}")
   ENDIF ()