amavisd-milter-1.7.0

New features:

• Fork after initializing milter socket.
• Use client_name if available instead of hostname passed to xxfi_connect.
• Generate amamvisd-milter.8 from AMAVISD-MILTER.md.

Bug and compatibility fixies:

• Fixed compiler warnings.
• Converted indentation to spaces only.
• Removed obsoleted file amavisd-milter.spec.