Several minor/basic fixes for pmdaoracle
Several minor/basic fixes for pmdaoracle

Missing a couple of instance hash structures, were
installing metrics without the associated indom
registered, session stats are a bit confused (I've
commented out cluster 8 for now), other minor run-
time discovered syntax/semantics issues.

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