cosmetic stage work
maintain action ids (actionNbr)
Merge branch 'master-var-refactor' into master-ruleeng
milestone: calling sequence changed so that wti is passed to many functions
milestone: now shuffeling wti ptr correctly down to action handler

except if main queue is in direct mode -- this need smore work
and thinking (probably via pthreads state variables, but let's see later)
milestone: change output module interface -- breaks build process!
milestone: make default modules compile again (but they do NOT work!)
milestone: stage work for omfile worker instance handling
milestone: omfile supports buffering mechanism
milestone: guard omfile writes by mutex
milestone: action engine changed to partially support wrkr instance action interface
Merge branch 'master' into master-ruleeng
mmanon: update to new output module interface (partial)
move all builtin-modules to new wrkr activation interface; make this mandatory

This intentionally breaks build of modules not yet converted.
add freeWrkrInstance to output module interface
Merge branch 'master' into master-ruleeng
impstats: cleanup
add debug output for worker actions
milestone: action mutex removed

This means actions may now be called concurrently and must make
provisions themselves to handle multi-threading.
call freeWrkrInstance() on worker thread termination