Update per-trunk global packet/byte counters in real-time

We used to update only the per-connection rx/tx packet/byte counters
on-the-fly, but not the per-trunk global counters.  The latter would
only be updated at the end of a connection.  As MGCP connections
can last quite long (think of a long phone call) this is maybe
not the best of ideas.

Note: The all_rtp:err_tstmp_in and all_rt:err_tstmp_out are still
only updated at the end of a connection.

Change-Id: Ib3866cb8149d3257fcf39733846c97c33881c4ee
Related: OS#4437
2 files changed