Merge branch 'devel/tizen_3.0' into tizen

* devel/tizen_3.0: (31 commits)
  Revert "sensorctl test"
  sensorctl test
  sensord: replace 0x% with %#
  sensord: change static function to member function about get_timestamp()
  sensor-hal: sync with the latest HAL interface
  sensord: set calibration at booting time if cal_node is existed
  sensord: fix the memory leak when get_data is failed
  sensord: remove unused variable
  sensor_base: add sensor event data caching for sync-read support
  sensord: use memcpy instead of copying values
  sensord: in similar with the interval, sensor attributes are separately maintained for each client.
  sensord: skip the get_data process when there are some problems
  sensord: hal: splite sensor_hal.h into sensor_hal interface and hal types
  sensord: add the comments for logic
  sensord: check whether the data is valid or not
  sensord: change sensor name to be the same as an sensor type name
  sensord: remove unused code in auto_rotation sensor
  poller: continue to handle remaining events even if on_event() returns false
  sensor_base: add data length parameter to on_event()
  sensord: close handles in sensor_loader destructor
  ...

Change-Id: I6c1d88a091826e7895f98cad68507f16d968f10b
Signed-off-by: kibak.yoon <kibak.yoon@samsung.com>