Proposal to enhance Rados Java:
- add listing by piece for listObjects() since many objects could not
fit in memory (List)
- change to public the close method of Rados (why it was protected?)
Add Junit Test case
Fix issue on limit and skip count in nextObjects() methods
Merge branch 'master' of https://github.com/fredericBregier/rados-java into fredericBregier-master

Conflicts:
	src/test/java/com/ceph/rados/TestRados.java
Merge branch 'fredericBregier-master'