Hard coded sample rate in pulse driver.

[Luke Yelavich]

Hi all,
While writing the recent patch I sent to the speechd list, I noticed that there 
is a hard coded sample rate and channel count in the pulse driver. Digging back 
through the log, I noticed this was from Hynek's pulse connection refactoring. 
I am wondering whether there is a specific reason why this was done. I don't 
see a mention of why in the commit message, and since pulseaudio is capable of 
doing resampling of incoming audio streams, I don't understand why the driver 
doesn't pass that information through to pulse.

I'm happy to write a patch to fix this, unless there is a good reason to leave 
it the way it is. Such a change will need to be tested of course, so will 
likely make it available in my own git repository and branch for testing 
purposes.

Thanks

Luke