ssmtp: extended to install sample ssmtp.conf, generators and the corresponding manpage

mail/ssmtp/ssmtp.conf

@@ -19,3 +19,9 @@ var_append makeinstopt ' ' 'GEN_CONFIG=true'
 
 var_append extraconfopt ' ' '--enable-ssl'
 var_append extraconfopt ' ' '--enable-md5auth'
+
+hook_add postmake 5 'ssmtp_install_conf'
+ssmtp_install_conf() {
+	cp -vf ssmtp.conf.5 "$root$mandir/man5/"
+	cp -vf ssmtp.conf generate_config* "$root$docdir/"
+}