Replaced win32 getmacaddress from interface list with SendArp.
Added UTMAC environment variable to allow override of getmacaddress.
Increased squeezeplay win32 revision to 304.
Fixed portaudio device lookup failure when both hostapi and device names were specified.
Added automatic maximum sample rate detection for portaudio builds.
Increased squeezeplay win32 revision to 305.
Cleaned up log_audio_output messages.
Use 48000 as default samplerate for OSX unless user has defined USEPAMAXSAMPLERATE since portaudio Pa_OpenStream returns success any samplerate for Core Audio.
Increased squeezeplay win32 revision to 306.
Fix unresolved reference to strnicmp for win32.
Increased squeezeplay win32 revision to 308.
Ensure device has at least 2 output channels.
Increased squeezeplay win32 revision to 309.