modules/sca: restore correct check for NULL in SCA_CALL_INFO_EMPTY.

- should also suppress -Waddress error without relying on gcc _Pragma.
mohqueue: remove sql table call_time column's default value

it is not supported in some database properly, and it is not
really needed.
mohqueue: remove call from queue if caller does not exist
app_lua: ids to sections in documentation
usrloc: ids to sections in documentation
avpops: ids to sections in documentation
avp: ids to sections in documentation
debugger: ids to sections in documentation
rtpproxy-ng: ids to sections in documentation
tls: TLSv1.1 supported since openssl v1.0.1
kamctl: regenerated db schema scripts

- updated after mohqueue default date change
ChangeLog: set the content with changes since branching for 4.0
rtpproxy-ng: remove code artifact that broke IPv6 received-from addresses
core: respect order field in NAPTR, as required by RFC 2915

- the beaviour is controlled by core parameter dns_naptr_ignore_rfc
- default is 1, preserving current behaviouf to ignore rfc requirements
  (for backward compatibility)
pua_reginfo: fixed typo related to module name in docs example

- reported by Marius Pedersen
dmq: add section ids in documentation
memcached: add section ids in documentation
tm: init sock_str to null value if no sock pointer is set in branch

- case of creating branches from a 3xx reply
- reported by juliabo [at] gmail
- identation made coherent with tm module style
Makefile.defs: enabled memory debugging

- to be kept for the rest of testing period to spot eventual buffer
  overflows
Makefile.defs: version set to 4.1.0-pre2