vchoi_fork

[svn-r439] Changed the PHDF test programs substantially.  Used to be just one
big testphdf5.c file.  Broke it into modules of related routines.
    testphdf5.c -- main routine and global variables initialization plus
		   some ulitility routines.
    t_file.c -- tests of file operations using parallel I/O.
    t_dset.c -- tests of datasets operations.