o We don't need to surpress "-Wframe-address" on clang;
o We don't need to surpress "-Wframe-address" on clang;

o trim down supported stack depth for both getreturnaddr() and
  getframeaddr(), those are unreachable under currently defined
  STACKTRAVERSE_MAX_LEVELS.

sippy/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy