FreeBSD/ports ae09012 (r502105)multimedia/svt-av1 distinfo Makefile

multimedia/svt-av1: update to 0.5.0

Changes:        https://github.com/OpenVisualCloud/SVT-AV1/compare/430c2a6f...v0.5.0
MFH:            2019Q2 (stabilization)
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+3-3multimedia/svt-av1/distinfo
+2-2multimedia/svt-av1/Makefile
+5-52 files

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