WIP: Documentation warnings
Added forgotten doc/Doxy*.in files
Get rid of get_node calls
docs: Don't try to install documentation

Debuild/rpm scripts are not ready for it yet
tests: Don't make artifacts if test is successfull
Cache: time_stats docs clarified
Tests: Order of cleaning after testing changed.

Now we remove test directories in the very end.
Cache: Resize page optimization.

Record is pre-cleaned from page before actual eviction. This way we
don't iterate twice over records that were evicted but are still in page,
waiting for sync.
Cache: Elements that were removed while being in sync queue don't sync now.
Core: added checking epoll_events
Merge pull request #343 from euroelessar/master

Doxygen & mix_states improvements (master)
pool: added comment on how client handles replies in multiple IO threads
Core: removed useless checks.
Monitoring: Added rwlock on access to dnet_node::monitor
Monitor: allocator for extracted from document value added
Merge branch 'master' of https://github.com/reverbrain/elliptics into io_stats
Merge branch 'master' of https://github.com/shaitan/elliptics into io_stats
Merge pull request #356 from shaitan/master

Core: Limited size of io queues to the number of io threads * 1000. (master)
Merge pull request #347 from IIoTeP9HuY/io_stats

Cache stats and optimization
Merge branch 'master' of github.com:shaitan/elliptics into python