Part of 22145

Sample config-only change.

Implements 24703.

config_get_lines is now split into two functions:
 - config_get_lines which is the same as before we had %include
 - config_get_lines_include which actually processes %include

Allow separation of exit and relay traffic to different source IP
addresses (Ticket #17975). Written by Michael Sonntag.

Queue a corresponding change for torrc.minimal.in.

Closes ticket 20085.

Closes #18300; patch from "icanhasaccount".

Update the definition of the private exit policy in the man page
and torrcs. It didn't get merged correctly into the man page, and
it was incomplete in the torrcs. (Unfortunately, we only reject the
primary configured IPv4 and IPv6 addresses, not all configured IPv4
and IPv6 addresses.)

Also fixup msn page formatting errors from changes in tickets 16069
and 17027, mainly unescaped *s.

Advise users how to configure separate IPv4 and IPv6 exit
policies in the manpage and sample torrcs.

Related to fixes in ticket #16069 and #17027. Patch by "teor".
Patch on 2eb7eafc and a96c0aff (25 Oct 2012),
released in 0.2.4.7-alpha.

ExitPolicyRejectPrivate now rejects more local addresses by default:
 * the relay's published IPv6 address (if any), and
 * any publicly routable IPv4 or IPv6 addresses on any local interfaces.

This resolves a security issue for IPv6 Exits and multihomed Exits that
trust connections originating from localhost.

Resolves ticket 17027. Patch by "teor".
Patch on 42b8fb5a (11 Nov 2007), released in 0.2.0.11-alpha.

In previous versions of Tor, ExitPolicy accept6/reject6 * produced
policy entries for IPv4 and IPv6 wildcard addresses.

To reduce operator confusion, change accept6/reject6 * to only produce
an IPv6 wildcard address.

Resolves bug #16069.

Patch on 2eb7eafc and a96c0aff (25 Oct 2012),
released in 0.2.4.7-alpha.