"redis" caching now in "master"

[Sitaram Chamarty]

Hi all,

Gitolite now has optional Redis caching in the "master" branch, and the
old "redis" branch has now been deleted. It's in master now, but has
not been tagged yet.

If you have used the code in the "redis" branch before, this code is NOT
the same. That branch is gone now. This is a complete rewrite, much
simpler, and much more focused.

Briefly:
1. make sure you have Redis, as well as the perl module, available
('perl -MRedis -e 0' should succeed)
2. enable caching by uncommenting the "CACHE => 'redis'" line in the rc
file.

See http://gitolite.com/gitolite/cache.html for details.

sitaram