K 10
svn:author
V 4
yuri
K 8
svn:date
V 27
2020-09-20T21:07:56.895958Z
K 7
svn:log
V 194
MFH: r549125

misc/mnn: Fix build on 13 by unbundling Flatbuffers

The bundled Flatbuffers was failing to build on 13 for some reason.

Reported by:	fallout

Approved by:	ports-secteam (joneum)

END