fixed fastrouter read body hook
fixed request log routing
when the emperor has a master, allows it to respawn the dead emperor
lib/linux_ns: check mkdir() return value

Fail earlier if we can't create the dirs we need.
Reported by Coverity as CID #970969.
core: log when fcntl() fails

Reported by Coverity as CID #970967, #970966.
core: log when sendmsg fails

Reported by Coverity as CID #970962, #970963.
core/cluster: log sendto() error

Reported by Coverity as CID #970958.
new rbtree implementation
Merge pull request #141 from xrmx/coverity5

Check return value of library call Coverity issues
added the sslrouter and various corerouters micro-optimizations
added --sni-dir
fixed --sslrouter-sni
--sslrouter and --sslrouter2 to be more aligned with --https
added --route-referer
fixed realloc() usare in core/io.c as spotted by cppcheck
fixed realloc() usare in core/io.c as spotted by cppcheck [2]
proto/zeromq: Don't leak ub on write error in uwsgi_proto_zeromq_writev_header

Reported by Coverity as CID #971247.
plugins/http: fixup some leaks in spdy

Reported by Coverity as CID #971245, #971246.
add last_request attribute to subscription node, it will hold the number of requests since last subscription ping
use node->last_requests instead of absolute request counter in (w)lrc
Merge pull request #142 from prymitive/router_delta

add last_request attribute to subscription node, it will hold the number...