[PATCH] msvcrt: Improve memmove performance on i386 and x86_64 architectures.

[Piotr Caban]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49663
Signed-off-by: Piotr Caban 
---

This implementation is still a little slower than native for small
buffers. We will probably need to use jump tables to get similar
speed.

It also affects bug https://bugs.winehq.org/show_bug.cgi?id=49633 but
the application changed since it was reported.

I'm not sure how long the code-freeze will be. It might be to late for
this change.

dlls/msvcrt/math.c   |   2 +-
   dlls/msvcrt/msvcrt.h |   2 +
   dlls/msvcrt/string.c | 264 ++++++++++++++++++++++++++++++++++++++++++-
   3 files changed, 266 insertions(+), 2 deletions(-)