Backport fixes for sipcapture to 5.0.

Important for $hep() to work properly. Mostly from GH #1191 You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/1281

-- Commit Summary --

* sipcapture: fix HEP3 capture-id >= 2^16 * modules/sipcapture: improve nonsip_hook documentation * sipcapture: remove excess byte order conversion * sipcapture: add missing or invalid byte order conversion * sipcapture: fix custom field variable naming * sipcapture: free allocated process memory before return * sipcapture: keep hep buffer unmodified while getting PV $hep(NNN) * sipcapture: safety checks for values inside w_float2int() * sipcapture: documentation typo

-- File Changes --

M src/modules/sipcapture/doc/sipcapture_admin.xml (22) M src/modules/sipcapture/examples/kamailio.cfg (20) M src/modules/sipcapture/hep.c (52) M src/modules/sipcapture/sipcapture.c (10)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/1281.patch https://github.com/kamailio/kamailio/pull/1281.diff