some checks to avoid unnecessary executions related to the nagios json interface
using a better init.d script for nrpe; instead of use "daemon" to start the daemon, we use start-stop-daemon, just it is on the sample config;
it was needed to run well on ubuntu 10.04
forget to add the nagios_boolean function on a nagios.cfg parameter to convert true to 1
added some missing options for service definitions - it should contain the entire nagios definition list
split nsca default recipe in two, client and server
fixed the roles to reflect the changes made on last commits