Issue #2548 Missing static library libtbb.a for armeabi and mips build fixed.
thread-safe VideoWriter and VideoCapture
Test execution inside Eclipse fixed;
OpenCV testing via OpenCV Manager implemented.
Update Android CMake toolchain for NDK r8c
Fix Android build with clang compiler
'Merging pull request 163 from asmorkalov/opencv'
Merging pull request #162 from taka-no-me/opencv
Libinfo build fix;
Libinfo revision formating fix;
HW dependent VersionCode for Manager implemented.
Merging pull request #167 from asmorkalov:java_api_manager_test
Merging pull request #169 from taka-no-me:android-ndk-r8c
Merge pull request #170 from asmorkalov:engine_build_fix
Improving compatibility with the latest Android SDK (r21) and NDK (r8c).

- Adding Android SDK/ADT r21 compatibility;
- fixing stl headers path for new ndk;
- fixing native API level for Android projects
Merge pull request #161 from apavlenko:fix/sdk_r21
Merge branch 2.4

Conflicts:
	android/service/engine/AndroidManifest.xml - use file from 2.4
	modules/contrib/src/detection_based_tracker.cpp - move #include <pthread.h> as in 2.4
	modules/java/android_test/src/org/opencv/test/OpenCVTestRunner.java - use file from 2.4
Issue #2547 Native camera does not work on Google Nexus 7 with Android 4.2 fixed;
Issue #2506 Unnecessary log printouts in OpenCV::camera fixed;
Native camera for MIPS Android 4.1.1 added.
Build script for camera updated.
Merge branch 'ParallelVideoStreams' of https://github.com/ilya-lavrenov/opencv into 2.4
Automatic minsdkversion setup added;
Linker problems on armeabi-v7a+NEON with Android 2.2 fixed;
Merge pull request #168 from asmorkalov:android_42_camera_fix
Merge pull request #171 from asmorkalov:android_8_neon_fix
OpenCV Manager headers refactoring.

All constants moved to android independent header file.