lib: virgo.gyp: fix windows by putting python before virgo_version
lib: virgo.gyp: fix windows by putting python before virgo_version

windows doesn't know how to do this

virgo-agent-toolkit/rackspace-monitoring-agent,kaustavha/rackspace-monitoring-agent,AlphaStaxLLC/rackspace-monitoring-agent,christopherjwang/rackspace-monitoring-agent,AlphaStaxLLC/rackspace-monitoring-agent,christopherjwang/rackspace-monitoring-agent,cp16net/virgo-base,cp16net/virgo-base,virgo-agent-toolkit/rackspace-monitoring-agent,cp16net/virgo-base,cp16net/virgo-base,cp16net/virgo-base,kaustavha/rackspace-monitoring-agent