msvcrt: Implement memcpy in msvcrt instead of forwarding to ntdll.

dlls/msvcrt/msvcrt.spec

@@ -1338,7 +1338,7 @@
 @ cdecl mbtowc(ptr str long) MSVCRT_mbtowc
 @ cdecl memchr(ptr long long) ntdll.memchr
 @ cdecl memcmp(ptr ptr long) ntdll.memcmp
-@ cdecl memcpy(ptr ptr long) ntdll.memcpy
+@ cdecl memcpy(ptr ptr long) MSVCRT_memcpy
 @ cdecl memcpy_s(ptr long ptr long)
 @ cdecl memmove(ptr ptr long) ntdll.memmove
 @ cdecl memmove_s(ptr long ptr long)

dlls/msvcrt/string.c

@@ -1605,3 +1605,11 @@ int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld80, int prec, int flag, struct _I1
     return 1;
 }
 #undef I10_OUTPUT_MAX_PREC
+
+/*********************************************************************
+ *                  memcpy   (NTDLL.@)
+ */
+void * __cdecl MSVCRT_memcpy( void *dst, const void *src, size_t n )
+{
+    return memmove( dst, src, n );
+}