Linking shared object to QML plugin breaks it inexplicably.

After executing QT creator's wizard for creating a plugin which exposes a datatype "dType" to QML, a proprietary shared library is linked to the plugin after which dType is not found by qmlviewer anymore (i.e. dType is not found for QML code).

Removing linkage enables the QML code to use dType again.

The problem was likely that the plugin had a dynamic link error, which QML did not report. QML should report this, to facilitate debugging.