Fixed PMID generation code to stay with the max limit.
Fixed PMID generation code to stay with the max limit.

Instead of going up from 511, go down from 511 (since 511
is the max for a PMID).

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