JPSSnagg

test/testnagg.sh
test/testfiles/mixed-defaultgeo-ext.txt
test/testfiles/mixed-defaultge-ignoreNTCgeo-ext.txt
    added new test for default terrain corrected geo with mixed geo input.
test/testfiles/usage*.txt
    modified expected output to match changes to help message.
src/nagg_options.c
    modified help message for changes to Like <example file> option and extended geolocation for terrain corrected eauivalence.
src/nagg_get_granules.c
    improved error message
    changed Error to Warning for not finding geo files which is checked later.