change test report output format and CXX test is not for parallel run yet

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1602 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
separate PROG and PAR_PROG as some programs may not be designed for parallel runs

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1603 c368ceb8-fd28-0410-a457-e46ee1d7cd4a