4.x
android: add android:exported="true"
Drop Adnroid.mk and Application.mk in samples as they are not used with Gradle.
Tutorial4 sample renamed to Tutorial-2-MixedProcessing
Fixed regression in Android Tutorial2 initialization.
cmake: Java/Android SDK refactoring
Removed Android AIDL from build scrips and tutorials as it's not needed since 4.9.0.