Merge pull request #376 from shaitan/lts

dnet_balancer and monitoring fixes (LTS)
Merge pull request #378 from shaitan/lts

IOClient: Provided ioflags from session to READ io command created by read_file. (LTS)
stall: fixed stall counter reset. Decrease timed out state weigth by 10 instead of 2.
stall: reset stall counter in transaction destructor if transaction hasn't timed out
stall: changed default reset-stall-count from 5 to 3
Merge branch 'lts' of github.com:reverbrain/elliptics into lts
v2.24.15.11
cache: only log lock/unlock if times spent is more than 1 ms
cache: only log constructor/lock/unlock if times spent is more than 1 ms
CMake: fixed indent in some CMakeLists files.