Follow netCDF approach: add files that are generated by flex and bison commands into the release, so users need neither flex nor bison to build ncmpigen. Configure will still check the availability of flex and bison, but not use them to build ncmpigen.



git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1667 c368ceb8-fd28-0410-a457-e46ee1d7cd4a