Correctly mark library modules

Mark RADOS class libraries as module so that they will be automatically
ignored when stripping binaries.

Signed-off-by: James Page <james.page@ubuntu.com>
Add missing stuff to clean target

Sweepup a few bits a pieces that get left behind by make clean.

Signed-off-by: James Page <james.page@ubuntu.com>
Merge pull request #864 from javacruft/wip-debian-feedback

Misc fixes from current Debian packaging

Reviewed-by: Sage Weil <sage@inktank.com>