FreeBSD/src 3b8d52d (r332853)sys/conf files, sys/modules/blake2 Makefile

blake2: Disable warnings (not just error) for code we will not modify

Leave libb2 pristine and silence the warnings for mjg.
DeltaFile
+3-3sys/conf/files
+3-3sys/modules/blake2/Makefile
+2-2sys/modules/crypto/Makefile
+8-83 files

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