print more version info during init

also fixed parsing the audio device string
remove non-thread-safe function call

conoutf can't be used from any thread other than the main one.
clientlogf may still mix up the output, but it won't crash.
Fix switching from spectator to active team in bot modes

Before this fix player could switch from spectate to alive mode,
but he stayed in SPECTATOR team.
Fix reset of packages source servers list

Earlier "resetpckservers" command cleared this list, instead of reset
to the initial settings.