[NTOS/CM]

[NTOS/CM]
 - Return the right index when the root subleaf is found.
 - Let's pretend I was nice enough to make the cells lexically sorted when in fact I just corrected a stupid binary search.
WARNING: this breaks ntoskrnl reading hive files produced before this revision. Sorry, this is a breaking change.
CORE-8524 #comment Committed, let's see what happens in the next days.

svn path=/trunk/; revision=64222