- rename fluid_test_linked_mod_test_identity() to
fluid_linked_mod_dump_test_identity()
- make use of duplicate function fluid_dump_linked_mod() in
fluid_desfont.c
- add comments
- make use of fluid_dump_modulator() in fluid_mod.c
- make use of string literal for printf.
- allow test_fluid_zone_check_mod to be executed with no arguments.
- use of TEST_SUCCESS macro for each test.
- fix minor comments typos.