BitRig/ports d40ca12. INDEX, net/irssi distinfo Makefile

Update irssi to 0.8.20 (a security release).
DeltaFile
+2-2INDEX
+2-2net/irssi/distinfo
+1-1net/irssi/Makefile
+2-0net/irssi/pkg/PLIST
+7-54 files

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