[PATCH 1/3] kmemcheck: add the kmemcheck core

[Vegard Nossum]

Hi,

This is kmemcheck against 2.6.25 as of today. This should be more or less
what's in x86.git, the most notable exception being that x86.git contains the
development history of kmemcheck since v4 or so, while this is the condensed
three-patch set.

This version also contains the removal of the "tracked" page flag.

I post it now for a final review, as requested by Andrew.

Vegard