Logs: changed trace_id output to hex.
Merge pull request #494 from shaitan/master

Logs: changed trace_id output to hex.
weight: print full weight change, not only first 3 digits
Merge branch 'master' of github.com:reverbrain/elliptics
v2.25.6.2
version: added check/read functions
Merge branch 'master' of github.com:reverbrain/elliptics into multibackend

Conflicts:
	bindings/cpp/log.cpp
	include/elliptics/interface.h
	library/trans.c
client: Fixed behavior of bulk operations

Equal state doesn't mean that it's equal backends