Update from 2.2.5 to 2.2.7.
Also update port infrastructure, remove needless script.
<ChangeLog>
What's new in Redis 2.2.7
=========================
* Fixed bug #543-2 (the issue was reopened with a completely different report)
that caused Redis to randomly crash on list push performed against lists
with other clients blocked with BLPOP (or variants).
What's new in Redis 2.2.6
=========================
* Fixed bug #543. If you saw Redis instances crashing on List operations
(only happening with a non-default max entry size ziplist setting in
redis.conf) it was almost certainly this problem.
* Fixed a bug with replication where SLAVEOF NO ONE caused a slave to close the
connection with all its slaves.
</ChangeLog>