Merge pull request #87 from lmesz/zmq

ZMQ: Added zmq source, destination and transport
python: Try to log exceptions instead of segfaulting syslog-ng
python: Fixed segfault if non-UTF-8 string encountered in the message
Merge pull request #95 from talien/f/python-exception-handling

F/python exception handling
Initial version of grok support
grok: Add README
grok: Fixed grok grammar file.
grok: Added test stub
grok: Added first unit test
grok: Refactored testcase, added grok debug option.
grok: Further improvements.

pattern_directory() works now, pattern() renamed to match(),
added tagging, but it doesn't work yet.
grok: Finished grok parser
grok: Updated README
grok: Added extra check for pkg-config.
grok: Added example configuration
grok: Makefile fixes.
grok: Made grok 3.6 compatible and eliminated some warnings

Also added libgrok-dev dependency for travis build.
Merge pull request #90 from talien/feature/grok

Feature/grok
configure.ac: Reordered CFLAGS and LIBS for INCUBATOR_* variables.
java-dest: create java destination initial commit

Signed-off-by: Viktor Juhász <viktor.juhasz@balabit.com>