- added a test to check handling of damaged .qi files on startup
- made sure each test identifies itself on startup

which enables to talk to the rsyslog core at runtime. The current
implementation is only a beginning, but can be expanded over time

Well, actually this and a lot of related things. I improved the
testbench so that the new capabilities are automatically tested and
also did some general cleanup. The current multiple tcp listener
solution will probably receive some further cleanup, too, but looks
quite OK so far. I also reviewed the way tcpsrv et all work, in
preparation of using this code for imdiag. I need to document the
findings, especially as the code is rather complicated "thanks" to
the combination of plain tcp and gssapi transport modes.

first noticed on FreeBSD
Also, some cosmetic improvements.

The testbench has now a generic driver that can run a whole class
of test suites just by providing a config file and test cases. This
does not cover all testing needs, but a lot.
We have now added one test for the new array-passing output plugin
interface.