* added in logic to properly handle the scenario of passing in either no deb_upstart_filepath with a valid deb_upstart_filepaths or the case where both contain valid values.
* added in logic to properly handle the scenario of passing in either no deb_upstart_filepath with a valid deb_upstart_filepaths or the case where both contain valid values.

Signed-off-by: Steve Houser <b222cffae4a3b03a5209b5c4bfc1448fa6500f91@gmail.com>

pwyliu/mkdeb,pwyliu/mkdeb