Amarok BleachBit cleaner

[nual at countermail.com]

I just created a BleachBit cleaner for Amarok, and it needs to be reviewed for safety/effectives before being added to a release of BleachBit; Some help from Amarok devs would be appreciated :)

As of now, the only option is to delete all files (but not directories) in ~/.kde4/share/apps/amarok/albumcovers/cache/

https://github.com/az0/cleanerml/blob/master/pending/amarok.xml

Thank you.