JPSSnagg

testnagg.sh
    Added test with incompatible and compatible input files that are not in the product list to see that they are ignored.
nagg_get_granules.c
    Refactored nagg_get_granules() function to ignore geo granules for products that aren't in the product list but are in the input files.
    Extracted get_n_geo_ref_value function from nagg_get_granules().

Tested jam & koala, icc & gcc