Initial version of zmq2kafka-streamer

[smorin]

this is the scope of development for the kafka-streamer Sparkngin adapter:

• Single ZeroMQ subscriber to start, configurable socket type response, pull
• Kafka producer with single topic and multiple partition support (initially random partitioner)
• Configuration file with "key = value" syntax.
• Configuration update by SIGHUP signal.
• Application log output to syslog
• High performance C daemon
• ZeroMQ publisher test script written in Python
• Documentation for the applications
• Well commented code
• Build scripts
• Detailed dependencies to install