bind_star_handling with wildcards that match multiple labels

[Sam Trenholme]

First of all, I wasn't able to apply Andrew's patch.  So, I looked at
the bug report and made my own patch.

I have copied the following zone file:

ns.example.net. 127.0.0.1
a.example.net. 127.0.0.2
*.example.net. 127.0.0.3

Then I did a number of tests:

askmara Aa.example.net.
askmara Ab.example.net.
askmara Ac.example.net.
askmara Aa.a.example.net.
askmara Aa.b.example.net.
askmara Aa.a.a.example.net.
askmara Aa.a.b.example.net.
askmara @a.example.net.
askmara @b.example.net.
askmara @c.example.net.
askmara @a.a.example.net.
askmara @a.b.example.net.
askmara @a.a.a.example.net.
askmara @a.a.b.example.net.

The behaviour, which is broken in 1.2.12.06, works fine in the 1.3
snapshot with the patch applied.

Attached to this message is both the patch that fixes this bug, and a
patch to fix a memory leak in 1.2.12.06 that is *ONLY* triggered when
bind_star_handling has a value of 2.

A version of MaraDNS with these patches applied is also available here:

http://www.maradns.org/download/1.3/snap/200706

- Sam
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