Import devel/avro-c version 1.7.3
Import net/babeld version 1.3.4
Update multimedia/assimp to version 3.0_1
Tweak dns/bind97 version 9.7.7
Update graphics/bmeps to version 2.2.26
Tweak devel/bsdbuild version 3.0
Tweak net-im/bsflite version 0.85
vietnamese/aspell: file shouldn't have been removed