Merge pull request #232 from shaitan/python

Fixes in python binding and recovery
v2.24.14.19
Merge pull request #233 from shaitan/python

Python: Unlock GIL inside synchronous calls
Added dnet_send_read_data() timings
Do not write timestamp for read requests, it is meaningless in request.
Merge branch 'master' of github.com:reverbrain/elliptics
Merge pull request #234 from shaitan/python

Build: Fixed prefix in executing setup.py
Use correct session::remove() method
Python: Fixed write_ prepare, plain and commit. Ioserv: Added store ids files in elliptics itself.
Merge branch 'master' of github.com:reverbrain/elliptics into python