* Move private android headers to android/include
* Install new API headers
Fix wrong include paths
Fix include
Remove unused headers, stage for next MR
Fix indentation
More cleanup of new headers to move them to later branch
Remove unused config.h
Missing ubuntu dir
Fix build of sensors test
Remove unneeded include
Merge 1
Merge trunk
* Move all private headers for android interfaces to android/include/
* Expose publicly only the C headers for the API
* Change namespaces to match new coding guidelines
* General cleanup and housekeeping of the codebase.

Approved by PS Jenkins bot, Ricardo Salveti.