add get part

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1957 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
add return value and revise stdout for make ptest

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1958 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
add new test programs

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1959 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
mostly revise comments

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1960 c368ceb8-fd28-0410-a457-e46ee1d7cd4a