srw: Removed app@ part from Cocaine event
rpm: Enable build with Cocaine
tests: Fixed srw test application
library: made dnet_request_cmd() non-blocking

All its users (monitor, statistics, indexes, more?) expect it to be non-blocking.
It is not a bug to block, it continues to invoke callbacks asynchronously, but
calling thread was blocked. This is especially annoying when requesting large stats.

Also removed control structure dnet_request_cmd_priv, it was only used as a reference
counter for wrapper around wait mechanics to hold original callback and private data.
srw: Added commentary about event's naming
Merge pull request #477 from euroelessar/master

Removed app@ part from Cocaine event and added Cocaine support in RedHat
v2.25.4.15
spec: added libev dependency for cocaine
spec: added libtool-ltdl-devel dependency for cocaine
Don't link with json

This library was a part of Cocaine.
Cocaine shouldn't build this library as shared one
Merge pull request #478 from euroelessar/master

Don't link with json
debian: do not install libelliptics_cocaine.so.*, it is being built statically now
Merge branch 'master' of github.com:reverbrain/elliptics
spec: do not require boost libraries, they will be populated from devel package version
v2.25.4.16
Merge branch 'master' of github.com:reverbrain/elliptics