ExternalProject-add-DEPENDS-builtin-steps
-----------------------------------------

* The :command:`ExternalProject_Add` command has learned the
  ``UPDATE_DEPENDS``, ``PATCH_DEPENDS``, ``CONFIGURE_DEPENDS``,
  ``BUILD_DEPENDS``, ``INSTALL_DEPENDS``, and ``TEST_DEPENDS`` arguments to
  add file-level ``DEPENDS`` arguments to the basic steps.
