Strip unix: prefix from both command line argument and command received from the control socket.
Strip unix: prefix from both command line argument and command received
from the control socket.

hongbinz/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,hongbinz/rtpproxy,synety-jdebp/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,Vocalocity/rtpproxy-pre,Vocalocity/rtpproxy-pre,jevonearth/rtpproxy,hongbinz/rtpproxy,jevonearth/rtpproxy,synety-jdebp/rtpproxy,dsanders11/rtpproxy,jevonearth/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,Vocalocity/rtpproxy-pre,sippy/rtpproxy,hongbinz/rtpproxy,Vocalocity/rtpproxy-pre