initial video writer impl
fixing compilation (skip android src tree dependent code and use prebuilt)
Updated video writer library. Fixed issue with Stop method hang (workaround implemented)
VideoWriter sample commit
Build fix. Refactoring.
copying to /lib folder and installation to SDK are added
renaming video-writer sample and making it installable
minor fixes to enable video writer sample
Build with Android 4.2 fixed.
Fixed Android vide writer and fixed sample to have permissions to write video file to the SDCard.
Build issues fixed. Path to video file in sample fixed.
Video writer functionality reorganized.

Connector class moved to androidlideo module;
CMake infrastructure updated;
Warning fixed.
Multiple native video libraries support added.
Tutorial-4-VideoIO added. Old sample removed.