gcc on Mac OSX complains conflicting types for ncmpiget_leng

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1585 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
should test if m4 runs fine without -B10000 first

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1586 c368ceb8-fd28-0410-a457-e46ee1d7cd4a