qa/160: rework for FreeBSD
qa/160: rework for FreeBSD

Need to be smarter about killing spawned processes, and improved
handling of output file naming conventions (the latter has nothing
to do with FreeBSD).

tjanez/pcp,andyvand/cygpcpfans,prasincs/pcp,tjanez/pcp,wuliming/pcp,andyvand/cygpcpfans,edwardt/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,prasincs/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,tjanez/pcp,adfernandes/pcp,prasincs/pcp,aeg-aeg/pcpfans,aeg-aeg/pcpfans,prasincs/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,prasincs/pcp,adfernandes/pcp,prasincs/pcp,adfernandes/pcp,edwardt/pcp,tjanez/pcp,prasincs/pcp,prasincs/pcp,adfernandes/pcp,aeg-aeg/pcpfans,wuliming/pcp,edwardt/pcp,wuliming/pcp,aeg-aeg/pcpfans,aeg-aeg/pcpfans,tjanez/pcp,andyvand/cygpcpfans,adfernandes/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,edwardt/pcp,tjanez/pcp,wuliming/pcp,edwardt/pcp,edwardt/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,edwardt/pcp,edwardt/pcp,wuliming/pcp,tjanez/pcp,tjanez/pcp