XD-131 Upgrade Lettuce to 2.3.2

- Upgrade Lettuce to 2.3.2

- Upgrade Netty to 3.6.5

- Remove unused Jedis dependency from classpaths
XD-140 Parameterize Syslog Port; Support TCP

- Rename syslog.xml to syslog-udp.xml
- Add syslog-tcp.xml
- Parameterize port

At this time, the protocol cannot be parameterized because of
context lifecycle issues (see XD-142).

- Add documentation for the syslog source:
	https://github.com/SpringSource/spring-xd/wiki/Sources#wiki-syslog
Merge branch 'xd123' of https://github.com/wkoh/spring-xd into wkoh-xd123

Conflicts:
	scripts/xd/xd-admin
	scripts/xd/xd-admin.bat
	scripts/xd/xd-container
	scripts/xd/xd-container.bat
Excluding Jetty Dependency from spring-data-hadoop

* Excluding Excluding Jetty Dependency from spring-data-hadoop for now as it the dependency interferes with Tomcat (in STS)