pkg/kamailio/deb: add missing dependence
core: fix condition on script callback number done inside EXTRA_DEBUG

- reported by Seudin Kasumovic, FS#388

(cherry picked from commit 740d407be4e35ee945658365ae38a1bba30fafc7)
pkg/kamailio/deb/debian: no websocket nor outbound on lenny.

Remove kamailio-mono-modules from Suggests
htable: fix crash if key_value is not string
(cherry picked from commit 065439c0fbabe2806fcd615cec5e2445db59beec)