Use melody_5.xml instead of melody.xml

[Sch1nken]

Hi there. I'm currently in the process of extracting and converting some PS2 SingStar DVDs for use with UltraStar. I've used SS2USConv and now tried performous-tools.

In-game (Ultrastar) I've noticed that for some languages (in this instance polish) special characters are missing. Not all of them, but most. Thanks to these tools being open source, I managed to track down the files in the pak and had a look.
It seems that there are always(?) 3 melody files:

• melody.xml - Always in ISO-8859-1 encoding?
• melody_4.xml - In UTF-8 encoding but still only containing valid ISO-8859-1 characters
• melody_5.xml - In UTF-8 enocding containing (in theory) all possible UTF-8 characters

For polish the only valid lyrics come from the melody_5.xml file (since most special characters here are not part of ISO-8859-1).

I've patched and compiled ss_extract locally to confirm its working.

Unless I'm missing the reason to always use melody.xml instead of melody_5.xml, I can provide a pull request for these changes.

[Tronic]

I probably wrote that code initially (so long ago I have forgotten it all) and your analysis seems correct. A PR would definitely be welcome.