Code review comment for lp://staging/~hingo/drizzle/drizzle-json_server-keyvalue

Right. json_server now requires version 2.0 of libevent library. I've now pushed an addition to pandora_have_libevent.m4 that adds a PANDORA_LIBEVENT_RECENT check. Basically, you need Ubuntu Oneiric or newer to have libevent 2.0, otherwise json_server will not be built. (I don't know about Fedora, on Centos I think they still have too old libevent.)

Also pushed the documentation that we finished on Friday.