0.0.3 -> 0.0.4

* change name from elsadriver to alsadriver
* soundcard module now support up to 8 soundcards
* cleanups in sound.h - changed structure names from uppercase to lowercase
* mixer
   - support volume read in decibel (todo: set volume in decibel)
   - most bugfixes
* PCM
   + separated code for OSS PCM and native PCM
   + native PCM code - original API idea by Thomas Sailer modified by me (Jaroslav Kysela)
   + fixes in OSS PCM - underruns are now OK - RealVideo 5.0b3 works now perfectly
     - note: this driver with RV 5.0b3 with ISDN stream 40kbit/s on Pentium II -
             10% CPU usage, with OSS/Lite from 2.0.33 - 50% CPU usage

0.0.2 -> 0.0.3

* change name from ultradriver to elsadriver
* changed prefixes 'ultra_' and 'ULTRA_' to 'snd_' and 'SND_'
* changed ultra.h to sound.h
* changed names of modules from 'ultra-xxxx.o' to 'snd-xxxx.o'
* updates for 2.1.85+ kernel
+ support for ESS AudioDrive ES1688 soundcards
