JPSSnagg

nagg.h
    addition of nagg_sort_granules().
nagg_posix.h
    short-hands and posix macros of HDqsort and HDstrcpy.
nagg_main.c
    added the call of nagg_sort_granules.
nagg_get_granules.c
    Changed nagg_print_granules to print Granule ID before Product name because
    that is the order of the sort keys.
nagg_select_granules.c
    addition of nagg_sort_granules().

Tested: koala and jam.