No longer need couple of local Win32 API routines.
No longer need couple of local Win32 API routines.

Remove local interface calls to the Win32 API routines
RegisterWaitForSingleObject and UnregisterWait, as these are now
available in the MinGW runtime we're using.

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