Android: Fix exceptions in ExtractStyle.java on Android L

Android L adds support for 64 bit (arm and x86) and they did lots of
changes that are incompatible with old implementation.

Task-number: QTBUG-40120
Change-Id: I69b78a9eed896d2ddabc1bf2a55886faeae47974
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>