reader/android: port to vanadium-android:1.5
* add support for x86-64 by specifying that a universal APK be built
* bump Android Gradle plugin version to 1.5 (fixes a problem where the
x86-64 shared library was not included in the universal APK)
* bump vanadium-android version to 1.5, fix a handful of breakages
caused by API changes in that version
* as a workaround of https://v.io/i/1101, provide a new single thread
executor to the VContext
Change-Id: I8f7942190d0343d4d978c3c68db4f1eed3651593
3 files changed