JPSSnagg

src/nagg_select_granules.c
    nagg_main.c
    nagg.h

        corrected a few typos and spacing

    nagg_write_granules.c

        added code to write HDF5 userblocks for NPP files.

test/testnagg.sh
    commented out a test applying contiguous layout to several datasets.  The ouput includes
    an offset value that is not the same from one run to another.  This test will need 
    further filtering capability in the nagg test scripts.