[PATCH] msvcrt: Optimize memmove implementation.

[Piotr Caban]

Based on Torbjorn Granlund code from Glibc.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49663
Signed-off-by: Piotr Caban 
---
  dlls/msvcrt/string.c | 20 +++++++++++++++++++-
  1 file changed, 19 insertions(+), 1 deletion(-)