ES1370: implemented wave output to file (raw and VOC format)
- added parameters 'wavemode' and 'wavefile' to the 'es1370' option
- ES1370: added new method sendwavepacket() (similar to SB16)
- moved VOC file methods from sb16.cc to soundmod.cc and added macros for them
- SB16: minor fixes


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11737 6c8e4198-a580-4521-a02f-c9ae86df1db9