Aditional toasts added;
Exception handling improved;
Bitmap recycling added.

removing Android tutorial 0 since it has become irrelevant after moving to the new application framework

Sample renamed to CameraControl;
Picture taking added to show camera preview restart.

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.

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

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

- Adding Android SDK/ADT r21 compatibility;
- fixing stl headers path for new ndk;
- fixing native API level for Android projects

These codes should be included into regular builds.

Face detection package name replaced on org.opencv.facedetect for consistency with Google Play package.

Memory leak in color-blob-detection sample fixed;
Default face size in face-detection is set to 20%;
Error handling improved;
Some possible mat leak fixed;
Manager verison and engine interface version incremented to fix incompatibilities;
Docs updated;

Some unification done to simplify camera switching.

Old Android support added;
Android 4.1.x fixes added;
Thead sync added;
Camera errors handling added.

Nexus 7 support added.

OpenCV initialization moved to onResume event to support package installation waiting.

Warnings fixed;
Nexus 7 support added to manifest.