[PORTCLS]

[PORTCLS]
- Portcls does not need to set the size of the audio buffer for completed irps. This is done in a completion callback in wdmaud. Verified with WinXP portcls
[WDMAUD_KERNEL]
- Free allocated mdls in the io completion routine. Also free the associated stream header.
[KS]
- Replace all ms portcls hacks by one.
- MS Portcls is now working in ReactOS (which is nice for testing audio related bugs)

svn path=/trunk/; revision=49417