JPSSnagg

nagg_write_granules.c
	Write fill granules for missing granules.  Current version writes correctly for leading granules that are missing and for intermitent granules.  Trailing granules that are missing will be noted but are not yet written.  Some attribute changes for fill granules still need to be done.

nagg_get_granules.c
	Changed a comment.

Tested on koala.