Merge branch 'maint-0.4.1' into maint-0.4.2

configure.ac

src/core/proto/proto_socks.c

src/ext/ed25519/donna/ed25519_tor.c

src/feature/dirauth/keypin.c

src/feature/relay/dns.c

src/lib/cc/compat_compiler.h

src/lib/crypt_ops/crypto_digest_nss.c

src/lib/net/address.c