Incompatibility with new Android native apps

Submitted by Constantin

Description

The documentation of gstreamer for Android does not include any info on how to use gstreamer with cmake for android native apps.
As of 2018, CMake is the default and recommended way to include native code in Android Studio.
Please see my Stackoverflow question for more details:

https://stackoverflow.com/questions/52056149/include-gstreamer-in-android-ndk-project-that-uses-cmake-cmakelists-txt-and-no