XD-1103: Add explicit Tomcat DataSource to jdbc sink

This provides pooling for the sink without the problems found by using
the corresponding boot annotated configuration class, which was ignoring
DSL-supplied options.

Also changes "tablename" property to "tableName"
Fix the bloody HSQLDB could not be started msg
Add regression test about ModuleOptions style
Some more script tests using processors.
Twitter stream tests.
upgraded to spring 4.0 release
Add more complex filter tests, including labels.

These have failing assertions which are currently commented out.
Add missing TEST_DIR in script tests