rtpproxy: fix spelling error in docs, reported from Victor V. Kustov, coyote at bks dot tv
modules/carrierroute Improvement for cr_route in failure route

Small improvement in cr_route() function - when it is called from
failure_route it will take care not choose a previously choosen gateway.

Added cr_reload sercmd.
modules/drouting Improvement for do_routing in failure route

Improvement for sort_order 2 : if the failure groups have repeating
gateways the module will take care internally not to try again a gateway
that was already tried.
Updated example config for S-CSCF
auth_diameter: remove unused but set variable
auth_diameter: remove unused but set variable
kamailio/utils/sercmd: remove unused but set variable
kamailio/utils/sercmd: remove unused but set variable
kamailio/utils/sercmd: remove unused but set variable
p_usrloc: commenting out unused db_timer_udomain() to get rid of compiler warnings
rr: use sips to build RR headers of R-URI has sips

- reported by Hugh James, FS#277
snmpstats Add SNMP support for shared memory

This is just the first proof-of-concept addition, will add more of the
core variables for memory and TCP connections
snmpstats Clear upp method-supported logic a bit and add "dialog-ng" for call statefullness
msrp: fix compile warning of argument type in dbg message

- reported by Olle E. Johansson
Makefile: exclude debian sym link when generating tarball
db_mysql: new module parameter - insert_delayed

- if set to 1, then all INSERT API queries will be converted in INSERT
  DELAYED (only DB API insert, not for raw queries)
enum: define the max size for numbers

- set it to 22 (previously hardcoded value was 17)
- easier to adjust and check for overlenght
- patch by Marcus Hunger
usrloc: new option for db_mode - DB_READONLY (4)

- location records are loaded only at startup
- no write back to database, not even at shutdown
- useful when registrations are replicated to another node that does the
  db storage at runtime
- started from a patch by Marcus Hunger
snmpstats Add information about version and tcp connections

Output from SNMPwalk with the new additions:

KAMAILIO-MIB::kamailioNetTcpConnEstablished.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpConnFailed.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpConnReset.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpConnSuccess.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpConnOpened.0 = Gauge32: 0
KAMAILIO-MIB::kamailioNetTcpConnPassiveOpen.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpConnReject.0 = Counter32: 0
KAMAILIO-MIB::kamailioNetTcpEnabled.0 = INTEGER: true(1)

KAMAILIO-MIB::kamailioSrvMaxMemory.0 = Gauge32: 33554432
KAMAILIO-MIB::kamailioSrvFreeMemory.0 = Gauge32: 31709088

KAMAILIO-MIB::kamailioSrvCnfFullVersion.0 = STRING: kamailio 4.5.0 (i386/linux) 50af49
KAMAILIO-MIB::kamailioSrvCnfVerName.0 = STRING: kamailio
KAMAILIO-MIB::kamailioSrvCnfVerVersion.0 = STRING: 4.5.0
KAMAILIO-MIB::kamailioSrvCnfVerArch.0 = STRING: i386
KAMAILIO-MIB::kamailioSrvCnfVerOs.0 = STRING: linux
KAMAILIO-MIB::kamailioSrvCnfVerId.0 = STRING: 50af49
KAMAILIO-MIB::kamailioSrvCnfVerCompTime.0 = STRING: 12:12:27 Mar 24 2023
KAMAILIO-MIB::kamailioSrvCnfVerCompiler.0 = STRING: gcc 4.1.2
KAMAILIO-MIB::kamailioSrvCnfVerFlags.0 = STRING: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
snmpstats activate new parts of the KAMAILIO-MIB