Reinstate optional pmFetch warnings.
Reinstate optional pmFetch warnings.

When the warnings were changed to be off by default, the plumbing to allow
the previous default to be enabled (-v) was incomplete ... this was causing
QA/363 to fail, besides being just wrong.

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