Update mssql PMDA to add comments for the metrics, change data type to 64 bits for virtual_file_stat metrics, fix the values (array offsets) for virtual_file_size and correct syntax error.
Update mssql PMDA to add comments for the metrics, change data type to 64 bits for virtual_file_stat metrics, fix the values (array offsets) for virtual_file_size and correct syntax error.

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