rpm -e package-1.0.0-1mdk

[Arizkuren Iosu <iarizkur tols17 oulu fi>]

Hello, when installing I create a directory in /usr/lib
e.g 	mkdir -p /usr/lib/mydata
The thing is that it remains there even after uninstalling the package.
I has not got anything inside, but 
Can I put somehow in the spec file that I want this directory deleted when
uninstalling?, how?
Thank you,
regards,
Iosu.