This patch fixes StevenBlack#2347.

Indeed, my previous patch was missing domains with dashes (-).

Indeed, even with the original regex, the following test doesn't
pass. Therefore, it is necessary to add it into the tests.

	www.example-3045.foobar.com

Indeed, before this patch, we were not supporting TLD which
contains digits and dashes (-) when "puny-encoded".

This "regexless" alternative just try to implement a more
"generic" solution to the actual "problem".

Please note that this commit will fail tests, because this commit
assume that IPs are not correct rules.

Please also note that the following test will also fail because
the new implementation assume that is actually a parsable
rule. @StevenBlack need to take a decision regarding that one rule.

	0.0.0 google

Also:
  * My editor "blacked" the file.

- Anything that looks like an IP will be ignored.
- Anything that doesn't containt dots will be ignored.

Indeed, from on:
  1. We strip out IPs.
  2. We strip out "potential" INVALID that:
     - doesn't contains dots
     - contains at least 2 consecutive dots
     - looks like an IP.

From now on an acceptable subject shall:
  1. have at least 1 dot.
  2. NOT be an IPv4 or IPv6
  3. NOT look like an IP. (Example: 258.300.10.3)