Merge topic 'FindJNI-targets'

00c4f488f2 FindJNI: support Android NDK
171d45c039 FindJNI: added components and imported targets
35e92ec619 FindJNI: improved description

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Alex <leha-bot@yandex.ru>
Merge-request: !7069