break up data_files for centos/redhat and debian, fix init script setup for rpm build: centos/rhel use systemd not upstart so no idea why an upstart file is being placed for them. Also the packaging guidelines (http://fedoraproject.org/wiki/Packaging:SysVInitScript) state that init scripts must be placed in /etc/rc.d/init.d instead of /etc/init.d.