Major paxos refactoring
Merge branch 'master' into paxos
Merge branch 'master' into paxos
Merge branch 'master' into paxos

Conflicts:
	src/paxos.m
fix output of errcodes
move declaration of service_iproto() to right place
report out libev version and backend
add latency measurement to octobench. Actually, it measures time between
request's creation and request's freeing, not a time betweensending and recieving of request
allow latency measurement for ping request
fix memory leak in iproto_worker
Merge branch 'master' of https://github.com/delamonpansie/tarantool
fix usage of outer realloc function in mhash
[octobench] more check of input arguments
[octobench] improve error handling for poll() call
Add debug macro FIBER_EV_DEBUG
Start event only when have bytes
New iproto wakeup
add framework for online graph
make beauty in graph
Test of Apple ObjC runtime