Rework last change following Nathan's suggestions: 1) max size for pid on Linux is 32-bits, and 2) use snprintf() rather than sprintf()
Rework last change following Nathan's suggestions: 1) max size for pid
on Linux is 32-bits, and 2) use snprintf() rather than sprintf()

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