debian: cocaine-tools depends on msgpack
ci: disable clang for now
debian: simplify configure
debian: create and chown /var/run/cocaine
debian: sorted dirs
Merge pull request #19 from SaveTheRbtz/master

From Cambodia with love.
more stats in engine::info()
set proper watermark on announce sockets to avoid leaks when peers disconnect forever
Merge branch 'master' into v0.10