Create sample for strcpy chain

[ptomin]

Many x86 binaries contanains strcpy(, ) compiled as scasb/movsd/movsb sequence:

    mov edi,<src>
    mov edx,<dst>
    or  ecx,0FFh
    xor eax,eax
    repne scasb
    not ecx
    sub edi,ecx
    mov esi,edi
    mov eax,ecx
    mov edi,edx
    shr ecx,2h
    rep movsd
    mov ecx,eax
    and ecx,3h
    rep movsb
    ret