Added unit test suite for the Rados striping API.

This includes tests for standard io and asynchronous io, similar to what is tested in the rados tests.
In addition, it includes in depth tests of the striping itself.

Signed-off-by: Sebastien Ponce <sebastien.ponce@cern.ch>
Added RPM and debian packaging for libradosstriper, creating a new package called libradosstriper1

Signed-off-by: Sebastien Ponce <sebastien.ponce@cern.ch>