unrar update

[Marcos Felipe Rasia de Mello]

Can someone take a look?

https://bugzilla.rpmfusion.org/show_bug.cgi?id=2338

I tested it in file-roller with:

- single volume rar files
- multi-volume rar files
- password protected rar files

If I didn't screw up, it's just a matter of complete the changelog info.

The header bug is https://bugzilla.rpmfusion.org/show_bug.cgi?id=1988

Regards,

Marcos