Build broken on amd64 - __explicit_bzero

[Paul Goyette <paul%whooppee.com@localhost>]

With sources updated today at 12:50 UTC

#      link  client/dhclient
/test-bed/tools/bin/x86_64--netbsd-gcc    --sysroot=/test-bed/dst     -o 
dhclient  dhclient.o clparse.o dhc6.o  -Wl,-dynamic-linker=/libexec/ld.elf_so 
-Wl,-rpath,/lib  -L=/lib 
/tmp//test-bed/.5067/external/bsd/dhcp/lib/common/libdhcp.a 
/tmp//test-bed/.5067/external/bsd/dhcp/lib/omapip/libomapi.a 
/tmp//test-bed/.5067/external/bsd/dhcp/lib/dst/libdst.a -Wl,-Bstatic -ldns 
-lisc -lpthread -Wl,-Bdynamic -lcrypto -lipsec
/lib/libcrypt.so.1: undefined reference to `__explicit_bzero'



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