Merge pull request #290 from shaitan/lts

Python: docstring documentation and extending binding.
config: update reserved fields to maintain proper ABI structure size
Acquire GIL in python binding in async_result::get()

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Merge pull request #292 from toshic/lts

Acquire GIL in python binding in async_result::get()
Merge branch 'lts' of github.com:reverbrain/elliptics into lts
v2.24.14.34
socket: use correct shutdown() flags, do not close write socket in microinit, do not fail on 0 socket returned by accept()
socket: guard failed epoll control setup unschedule with send_lock
socket: more debug on error, unschedule can use null event pointer
socket: unschedule failed IO schedule right in the place where it failed
socket: debug connected socket
socket: reconnection should not close socket if state creation failed - it will be closed internally
socket: do not double-close sockets after dnet_state_create()
v2.24.14.35