qa/828 - tune the valgrind suppressions
qa/828 - tune the valgrind suppressions

These seem to work better across several platforms and valgrind
flavours.

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