JPSSnagg

New feature: (JPSS-49)
    -d is fucntional now.

test/testfiles/usage.txt:
test/testfiles/usage-bad-option.txt:
    updated with new usage output.

test/testfiles/redro1-d.txt:
test/testfiles/redro1-d-redundant.txt:
    Expected output files for newly added tests for -d option.

test/testnagg.sh:
    New tests for the -d option added.

doc/RELEASE.txt:
    Updated with the new supported -d option.

src/nagg.h:
src/nagg_options.c:
src/nagg_select_granules.c:
    Implement code to support the -d option.

Tested: Jam and Koala.