Client: Fixed compilation on gcc-4.6

It's impossible to pass Args... to template argument from macros
Merge pull request #298 from euroelessar/master

Client: Fixed compilation on gcc-4.6
Python: Added checkers and filters to python binding via enums. Fixed typo in checker exception message.
Merge pull request #299 from shaitan/master

Python: Added checkers and filters to python binding via enums. Fixed typo in checker exception message.
cmake: build srw test only when cocaine is enabled. Added proper libev detection
network: wake up throttled queue sleepers when network sending fails
Merge branch 'master' of github.com:reverbrain/elliptics
python: indent fixes. added default switch case into filters/checkers
cmake: temporarily disable tests external arguments
Merge branch 'master' of github.com:reverbrain/elliptics
status: fixed use-after-free in status update command - we have to correctly initialize and use private refcnt
Indexes: Fixed remove_indexes for several nodes in group

All requests were incorrectly sent to first node
Merge pull request #301 from euroelessar/master

Indexes: Fixed remove_indexes for several nodes in group
cache: Improved hash function in cache

Use last 8 bytes in addition to first one. Otherwise all keys for
specific shard comes to single cache object.
cache: Changed format of cache logs

Write log once per action

Conflicts:
	cache/slru_cache.cpp
cache: Added more logs to resize operations

Conflicts:
	cache/slru_cache.cpp
Merge pull request #303 from euroelessar/master

Cache improvements
Merge branch 'master' of https://github.com/reverbrain/elliptics into cache_treap

Conflicts:
	cache/slru_cache.cpp

Cache: stats merged
Python: Fixed accepting IoAttr instead of Id in read/write operations. Fixed overriding write_data by write_data_by_chunks.
Merge pull request #304 from shaitan/master

Python: Fixed accepting IoAttr instead of Id in read/write operations. Fixed overriding write_data by write_data_by_chunks.