Added first trace implementation
Added trace_id to python bindings.
Merge pull request #213 from euroelessar/master

Removed -Werror flag due to bugs in boost backported to RHEL 5
Merge branch 'master' of github.com:reverbrain/elliptics
Do not set read/write sockets to -1 until they are closed
Merge pull request #216 from euroelessar/master

Forced rpath option for dnet_cpp_test
Merge branch 'master' of github.com:reverbrain/elliptics
v2.24.14.1
Merge branch 'master' of github.com:reverbrain/elliptics into trace

Conflicts:
	cache/cache.cpp
Use char * in open() call
Cleanup dnet_state_reset() calls - generally it is not allowed to 'put' state's refcnt from arbitrary place, since we do not know whether refcnt was increased or not previously.
v2.24.14.2
Fixed tracing with low log level. Moving trace_id to begin of line in log string.
Traversed trace_id for index requests.
Added trace_id to cache
Destroy timed out transactions in checking thread. Correctly kill state with errors in it.
v2.24.14.3
Merge branch 'master' of github.com:reverbrain/elliptics
Renamed back dnet_trace* to dnet_log.
Added trace_id to dnet_backend_log. Added DNET_TRACE_BIT for ignoring current log level for traced request.