__seguse.txt added to show _seg usage also OpenVGMFile needs to be ported to 16_snd...

__seguse.txt added to show _seg usage also OpenVGMFile needs to be ported to 16_snd.c  ][ ca needs huge amounts of work and i should remember what needs to be done soon also i should reverify 16_in.c to make sure it can work with other code of id engine ][going to work on more on 16_in.c] [added data.zip to the www testing distribution for testing wwww