A regression in real HW testing between 0.3.15 release and current trunk

For extensive testing/range-finding/regression-finding: see http://www.reactos.org/forum/viewtopic.php?f=2&t=12924&p=104983#p104983

Note that this regression is only noticeable on real HW (aka, due to real HW testing; it doesn't show up on VM-related tests, apparently).

Main introduction of the regression:

modification by jgardou (build 58652);

[CMIDriver]

• Update the C-Media 8738/8768 driver to 1.2.6
• Add it to build