In tutorial-1 fps meter enabled via layout.xml. Camera id is set to "any" via lauout.xml;
In tutorial-2 message moved ion the bottom of the screen.

OpenCV namespace added;
Default values for camera_id added;
Aditional constructor with cameraId added.
Resolution added to FPS message.

FPS meter added;
Camera switching posibility added;
Attributes loading for layout filed implemented.

(#2569) simplifying code to avoid Eclipse CDT editor confusion, removing warnings and typos in comments

* do not lose auto-selected device while running several tests
* reduce output noise
* list available devices if unable to auto-select device
* fix error message when no devices connected

All samples use application style in android manifest instead of system calls in onCreate event now.

New versions tries to search library in arm-v7a and Manager packages only.

All constants moved to android independent header file.

Linker problems on armeabi-v7a+NEON with Android 2.2 fixed;