Add update from upline Peter Czanik (CzP) <peter.czanik@balabit.com>
to support an example of Elasticsearch being written up in his blog
about syslog-ng.

Submitted by: Peter Czanik (CzP) <peter.czanik@balabit.com>

		Balabit / syslog-ng upstream

This commit also includes a fix to JAVA_MOD_BUILD_DEPENDS to correctly
depend on shells/bash.