Initial commit on performance test
This project is independent of XD as it tries to test the performance of messaging middleware
  - Added timer/counter hooks into redis queue inbound/outbound channel adapters
  - Added application context that has syslog-tcp/udp inbound channel adapter that
  injects incoming messages into redis backed middleware
  - Updated the perf-test scripts with args4j supported cmdline options
  - Made the perf-test zip so that it can run standalone