New version of Java wrappers' generator uses different wrappers for VideoCapture
on Android and desktop to prevent binary compatibility issues.

Java inlines static finals if they're defined with a constant expression. In
case of version constants we don't want that to happen, since they obviously
change from version to version. If the user substitutes a different OpenCV
jar without recompiling, we want user code to still have relevant values for
the version constants.

This arranges that by turning constant values into function calls, which no
longer count as a constant expression.

It increases performance on some devices like Nexus4.
Target Android SDK version increased up to 14.

Typo breaks debug build for Android platform.

- enable auto-wrap of VideoCapture;
- minor refactoring of generated code templates.

OpenCV Version 2.4.6;
OpenCV Manager Version 2.8;
Doc fixes.

Simple set of the camera index to allow the user to change it after the object has been initialized.

A modification of the JavaCameraView is needed to avoid a crash when the
app is exited. It is a good practice to remove the callback after the
stopPreview method.

Also, removed the one from modules/python/src2/cv.py and cleared its
executable bit, since it's not a script.

Front/Back camera constants' values changed;
Additional camera facing check added for JavaCameraView.

OpenCV Manager verison incremeneted;
Docs and tests updated accordingly;
COnstant for Manager initialization added.

Native activity build warning fixed;
Logcat messages for JavaCameraView updated (Bug #2876);
Some fixes for feature #2893 done.

OpenCV version incremented;
New CvCameraViewListener interface description added.