Unify patch series summary

Unify patch series summary

This patch seems bigger then what actually is.

It just moves some code around and adds a bit of coding style fixes
to do_move() and undo_move() so to have uniformity of naming in both
functions.

The diffstat for the whole patch series is

239 insertions(+), 426 deletions(-)

And final MSVC pgo build is even a bit faster:

Before 448.051 nodes/sec

After 453.810  nodes/sec (+1.3%)

No functional change (tested on more then 100M of nodes)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>