[SOC] proposal -> valgrind

[Eric Pouech]

Another potential proposal for SOC would be upgrading valgrind to work 
with Wine.

I've tweaked it a bit (some patches still floating around), but:
- that's not complete (some items still don't work)
- what's also completly missing is the support of native modules 
(especially when generating backtraces)
- 16bit support (but we can safely leave it out for now)
- and testing (and fixing) most of the implementations we have

I've updated the Wiki page accordingly.
A+