JPSSnagg

Added duration of each product to the product tables. Changed the
product tables a 1D array of structs.

src/nagg_main.c:
    Cleaned up a #if not to show debug output.
src/nagg.h:
    Removed old macros that access the columns of the old product tables.
    Defined struct nppproduct_t for the new product tables.
    Added iet_t get_product_duration_by_id which returns product duration.
src/nagg_options.c:
    Removed print_product_lists from this source module. It is more
    logical to put it in nagg_product.c
src/nagg_select_granules.c:
    Added code to use get_product_duration_by_id to retrieve product
    duration for timeg.
src/nagg_product.c:
    Added duration of each product to the product tables. Changed the
    product tables a 1D array of structs.
    Changed get_product_sname_by_id and get_product_id_by_sname to use the
    new struct.
    Added iet_t get_product_duration_by_id to return product duration.
    Moved print_product_lists into this source module.

Tested: koala