osmocom-nitb debian package improvements.

* Don't enable MNCC sock by default.
* Create important directories.
* Fix init script 'stop' command.
diff --git a/openbsc/debian/osmocom-nitb.default b/openbsc/debian/osmocom-nitb.default
index 106c2f9..ef76a5f 100644
--- a/openbsc/debian/osmocom-nitb.default
+++ b/openbsc/debian/osmocom-nitb.default
@@ -1,3 +1,8 @@
 CONFIG_FILE="/etc/osmocom/osmo-nitb.cfg"
 HLR_FILE="/var/lib/osmocom/hlr.sqlite3"
-DAEMON_ARGS="-m -P"
+
+DAEMON_ARGS="-P"
+
+# Uncomment if using LCR+Asterisk
+# DAEMON_ARGS="-m -P"
+