msvcr100: Add wmemmove_s and wmemcpy_s

[Dan Kegel]

I asked Alexandre what
http://source.winehq.org/patches/data/88732
needed before it could be reviewed.  He said it needed to adapt
to the recent parameter checking changes.  I see that
when he took my patch
http://www.winehq.org/pipermail/wine-patches/attachments/20120728/bea2581d/attachment.obj
and committed it as
http://source.winehq.org/git/wine.git/patch/49560458426cf25b6a36bbf9bad35aa75c9f7aa7
he could remove a few assignments to *MSVCRT__errno()
because MSVCRT_CHECK_PMT now does that for you.

But msvcr100's wmemmove_s/wmemcpy_s are different; they
do not change errno.  Tests in my patch confirm this.  So
changing msvcr100's CHECK_PMT macro to assign to errno
doesn't seem appropriate.

So, is there still anything that needs changing?