loongson/mirror: links for bob-db-casiasurf

loongson/mirror bob.db.casiasurf-1.0.3.zip
loongson/mirror bob.db.casiasurf-1.0.2.zip
loongson/mirror bob.db.casiasurf-1.0.1.zip
loongson/mirror bob.db.casiasurf-1.0.0.zip