perform hostname lookup BEFORE starting tls
more steps towards SNI
functional SNI
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bzero -> memset
bcopy -> memmove
Merge branch 'master' into 376-SNI

Conflicts:
	smtpd/smtp_session.c
remote whitespace
memset, not memcpy
fix memmove calls after mechanical update
Merge branch 'master' into 376-SNI
remove unused struct members
Merge branch 'master' into 376-SNI

Conflicts:
	smtpd/parse.y