reduce delta between OpenSSH and OpenSMTPD portable
remove mfa.c, replaced with filter.c
remove log_imsg() in ca.c, as it's already called in imsg_dispatch()
Merge branch 'master' into portable
add missing asr_freeaddrinfo() prototype
move asr.h from contrib/lib/libc/asr to openbsd-compat. While there, sync it with latest upstream changes
add 2 missing includes:
1/ #include <asr.h> needs #include <netdb.h>
2/ each portable file needs #include "includes.h"
add missing #include "includes.h"
sync asr with latest upstream changes