(werror_vformat): Don't output any punctuation for

%e. Changed all callers to use it like "...: %e.\n".

Rev: src/adns.c:1.5
Rev: src/channel_forward.c:1.21
Rev: src/client.c:1.179
Rev: src/client_tcpforward.c:1.11
Rev: src/client_x11.c:1.39
Rev: src/daemon.c:1.22
Rev: src/gateway.c:1.25
Rev: src/io.c:1.231
Rev: src/lsh-decode-key.c:1.26
Rev: src/lsh-decrypt-key.c:1.7
Rev: src/lsh-export-key.c:1.24
Rev: src/lsh-keygen.c:1.25
Rev: src/lsh-make-seed.c:1.27
Rev: src/lsh-transport.c:1.20
Rev: src/lsh.c:1.223
Rev: src/lshd-connection.c:1.14
Rev: src/lshd-userauth.c:1.14
Rev: src/lshd.c:1.186
Rev: src/reaper.c:1.29
Rev: src/seed_file.c:1.4
Rev: src/server_pty.c:1.35
Rev: src/server_session.c:1.118
Rev: src/server_x11.c:1.30
Rev: src/socks.c:1.11
Rev: src/srp-gen.c:1.28
Rev: src/transport.c:1.16
Rev: src/unix_interact.c:1.33
Rev: src/unix_process.c:1.23
Rev: src/unix_random.c:1.24
Rev: src/unix_random_user.c:1.3
Rev: src/werror.c:1.82