Updated vendor/kinetic-protocol to 2.0.6 tag. Updated kinetic_proto module to...

Updated vendor/kinetic-protocol to 2.0.6 tag. Updated kinetic_proto module to new version generated from protobuf-c. Updated vendor/kinetic-java JAR files to new build based off of 2.0.7 tag of kinetic-java.
Added zlog as a new submodule, since it has support for config file, logging levels, timestamps and in-memory cacheing for fast performance, but have NOT updated to use it yet.