srp_daemon: Modify get_rules_file() such that it has a single exit point
Allow specification of comp_vector and can_queue in srp_daemon.conf

Also add overflow checking for the conf->rules[line_number].options
buffer.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
srp_daemon: Eliminate two superfluous casts
Makefile.am: Add RPM build target

Signed-off-by: Bart Van Assche <bvanassche@acm.org>