fix build on FreeBSD
doc: mention recent build system patch
Changed and extended debug output in queue/action classes for further analysis
nit: use correct function names in new debug instrumentation
bugfix: 100% CPU utilization when DA queue became full
fix regression that caused freeInstance not to be correctly called

was introduced July, 5th 2013 by commit 8ee2b0b1610fbf4dff20453d188f379583410b42