Updating submodule(s).

 [nomail]
Adding Makefile target test-all that also runs the BroControl test
suite.

Eventually "make test" should do this but let's trigger it separately
for now.
Merge remote-tracking branch 'origin/master' into topic/robin/plugins

Conflicts:
	aux/broctl
More smaller cleanup.
More analyzer framework tests.
A work-around for supporting plugins compiled as *.a.

This is for older CMakes which don't understand object libraries yet.
We auto-generate a file at the top-level that references all the
global plugin objects. Once they are referenced, the linker includes
them into the final executable and their ctors run to register them
with the plugin manager.

By default this is on. Once we can require more recent CMakes, we can
turn it off (and remove) in src/CMakeLists.txt.