guide.html: add few links to online {iostat,sar}2pcp(1) pages
guide.html: add few links to online {iostat,sar}2pcp(1) pages

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