When the QML files are all bundled into a .qrc file, they don't get
copied to the install dir, which would lead to qmlimportscanner not picking
up the dependencies (e.g. QtQuick Controls) for android packaging.
Looking at commit 1b0496d, I wonder if maybe we should be able to specify
two paths to look into? But qmlimportscanner doesn't support that, does it?