[Aggregator] StorageBackend_ptr typedef.
[Util] Added Util::Handle2Num().
[LMP] Use Util::Handle2Num().
[Aggregator] Added StorageBackendManager.
[Aggregator] Register itself in StorageBackendManager.
[Aggregator] Use StorageBackendManager's signals.
[Util] Added UTIL_API.
[Aggregator] Randomized connection name.
Merge branch 'master' of github.com:0xd34df00d/leechcraft