Session storage prototype. #26
Session storage. closes #26
Some fixes by Roman's review.
Minimize patch by Roman's review. #26
box.session.storage: minor changes
Fix OPENTAR-65: Add information about replication status to box.info.status

This patch also reworks title() to show role@custom_proc_title for all roles
as defined in the documentation.
Cherry-pick pieces of odnoklassniki patch (patch is credits to @yuran)

This patch implements show index and shows memory waste of the
slab allocator.
Merge branch 'stable' of github.com:tarantool/tarantool into stable
Merge branch 'opentar65-replication-status' into stable
gh-26: minor optimization of session destructor

The patch should use struct session, which is non-existent
in 1.5, so at least make session_storage_destroy a bit faster.
Merge branch '26-session-storage' into stable
Make 1.5.2 release.