Old packages are not cleaned

[beruic]

Looking in /var/local/oab/pkg, it contains:
jdk-6u30-linux-i586.bin jdk-6u30-linux-x64.bin jdk-6u31-linux-i586.bin jdk-6u31-linux-x64.bin
after running the script. Furthermore the /var/local/oab/deb also contains multiple versions.
Shouldn't there be some cleaning built into the script when new versions emerge, or some way to trigger cleaning?

[beruic]

Could you make -c clean the binary packages from Oracle as well, or is this cleaned otherwise?