plus some minor nits. This was found after a clang static code analyzer
analysis (great tool, and special thanks to Marcin for telling me about
it!)

The action state machine now works correctly and has been verified a
few hand-picked cases. I am missing automatted tests, though, this is
not easy to achive... Anyhow, I've improved omtesting, so that it can
be used in such automatted tests.

pkg-config uses uppercase for its _CFLAGS and _LIBS variable names.
So we follow suit and convert all _cflags and _libs variables to
uppercase for more consistency.

Signed-off-by: Rainer Gerhards <rgerhards@adiscon.com>

reduced dependencies, moved non-runtime files to its own directory except
for some whom's status is unclear

    Results in reducing code complexity.

- changed module interface version, as the interface change is quite large