Add Fortran paramaters for PnetCDF library version numbers: PNETCDF_VERSION_MAJOR, PNETCDF_VERSION_MINOR, and PNETCDF_VERSION_SUB

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1572 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
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git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1573 c368ceb8-fd28-0410-a457-e46ee1d7cd4a