Added envelope field to data in kv and queues (phase 1).
Added connector tests for message consume/publish using the message envelope.
Added support for content type and encoding to riak and redis driver (Phase 2).
Code clean-up.
Added partial support for content type and encodign in the memcache driver.
merge with ciprian
More on adding contenttype+encoding to kv messages.
Added encoding info for all connectors.
Fixed cloudlets module for using current version of connectors.
More on fixing cloudlet module for using extra info in connector messages.
Fixed errors in cloudlets examples.
Code clean-up.
Code clean-up
merge with ciprian
Fixed error in mosaic-realtime-feeds
Resolved some imports
Distributed Filesystem proto-buffer definitions and compilation

--HG--
extra : transplant_source : T%20%F6%92u%8846%3E%FE%FB5%9E%0E%F7BX%85%FC%1D
Split message into Driver and Handler

--HG--
extra : transplant_source : %3B%BE%BE%B2Z%D8%21i%9C%2A%01%F0%B3n%C1P%91%EB%F3%17
Move forward the package version
Minor code auto formatting