Updates to the check-statics libpcp script for getdate changes
Updates to the check-statics libpcp script for getdate changes

Add comments to each of the newly added statics for getdate to
describe why each is considered thread-safe.  Also, found that
the yytos symbol was not present in debug builds (without -O2)
- Stan points out this generated symbol can be optimized away.

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