(Swift 2) Convert a Text File from utf-8 to Windows-1252

Convert a text file from one character encoding to another.

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func chilkatTest() {
    // It's really simple:  Just load from one charset, save using another.

    let sb = CkoStringBuilder()

    // In this case, my test file has some norwegian chars in the utf-8 encoding
    var success: Bool = sb.LoadFile("qa_data/txt/norwegian_chars.txt", charset: "utf-8")

    // We could just as well write over the file we just read in.
    // (But I don't want to do that for my example..)
    success = sb.WriteFile("qa_output/norwegian_chars.txt", charset: "windows-1252", emitBom: false)

    // Note:  Windows-1252 is a 1-byte per char encoding, which means it's only capable of representing
    // those chars in Western European languages.   See https://en.wikipedia.org/wiki/Windows-1252
    // 
    // utf-8 is an encoding that can handle chars in any language, including Chinese, Korean, Japanese, Arabic, Hebrew, Greek, etc.
    // If a text file contains chars in these other languages, obviously it cannot be converted to windows-1252 because
    // there are only 256 chars that can possibly be represented in a 1-byte per char encoding.

}