Update source tarball creation for Win32, ensure SRC_ROOT macro (pcp-version) used correctly on mingw builds in all places.
Update source tarball creation for Win32, ensure SRC_ROOT macro
(pcp-version) used correctly on mingw builds in all places.

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