Fix #45: add support for rlimit per service/run/task/inetd/tty

This patch extends the existing rlimit implementation to support setting
limits per service, run/task, inetd, and tty.

Use rlimit in /etc/finit.conf to change the global setting, which is
then inherited to each /etc/finit.d/*.conf.  For each .conf file the
rlimit is reinitialized to the global finit.conf settings.

Also, add `unlimited` keyword, to replace the now deprecated `infinity`
keyword.  The latter is however kept, for compatibility with previous
releases, for the foreseeable future.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

plugins/dbus.c

@@ -29,6 +29,7 @@
 #include "helpers.h"
 #include "plugin.h"
 #include "service.h"
+#include "conf.h"
 
 #define DAEMON "dbus-daemon"
 #define ARGS   "--nofork --system"
@@ -58,7 +59,7 @@ static void setup(void *arg)
 
 	/* Register service with Finit */
 	snprintf(line, sizeof(line), "[S12345] %s %s -- %s", cmd, ARGS, DESC);
-	if (service_register(SVC_TYPE_SERVICE, line, NULL))
+	if (service_register(SVC_TYPE_SERVICE, line, global_rlimit, NULL))
 		_pe("Failed registering %s", DAEMON);
 	free(cmd);