Bug#879203: RFP: redisearch -- search engine on top of Redis

[Piotr Ożarowski <piotr@debian.org>]

CCing redis maintainer as there's probably a need for Redis module
naming policy (I chose redis-modulename as binary package name).

Please also note that there's no standard module directory, at least
upstream doesn't define one AFAICT so I chose
/usr/lib/redis/ but maybe /usr/lib/redis/modules/ is a better idea.

There's also no mechanism to autoload installed module that maintainer
or system admin can use other than editing /etc/redis/redis.conf
(and add "loadmodule /usr/lib/redis/redisearch.so" there) so support for
/etc/redis/conf.d/ or autoloading modules from given dir at startup
would be great (can we request that upstream?)