Process a makefile and outputs an equivalent makefile with projects version resolved to latest available.
drush make-update
makefile : Filename of the makefile to use for this build.
--includes : A list of makefiles to include at build-time.
--source : The base URL which provides project release history in XML. Defaults to http://updates.drupal.org/release-history.
--dev : Work with development releases solely.
--check-disabled : Check for updates of disabled modules and themes.
--security-only : Only update modules that have security updates available.