- Added capability to change the wave output mode at runtime
- Always initialize the lowlevel sound driver (for wave input / recording)
- Wave input (recording) is now independent from the wave output mode
- Changed the "wavemode" parameter type to bx_param_enum_c and set up more
  accurate dependencies
- Minor related changes


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11953 6c8e4198-a580-4521-a02f-c9ae86df1db9