Add RollingFileInitializer support for the WinCE platform.

[gwankyun]

WinCE lacks many functions like _wsopen_s，should use CreateFileW instead。

#include "stdafx.h"
#include <Windows.h>
#include <plog/Log.h>
#include <plog/Initializers/RollingFileInitializer.h>

int _tmain(int argc, _TCHAR* argv[])
{
    plog::init(plog::debug, "/Storage Card/test.log");

    PLOG(plog::debug) << "plog";
    PLOG(plog::debug) << "on";
    PLOG(plog::debug) << "WinCE";
    return 0;
}

[SergiusTheBest]

What do you use to build it?

[gwankyun]

What do you use to build it?

VS2008 with M3350_SDK(ARMv4I).