committed this change
Added '-c <cfg>' and '-C' flags to use (and with '-C' generate) a
config file (similar to the '-C' and '-c <cfg>' flags with p4broker).
Updated docs accordingly.
Added missing 'chmod +x' step in man page in docs.
Enabled testing on Mac OSX to get past the package manager test,
since yum/apt-get/zypper aren't expected to be on Mac OSX.
to cycle through the changes.