Ignore dumper failures if dumper is from 2.1. This is the case e.g.
for the time being with the Qt SDK 1.1. The type info might still
be available if a .qmltypes file is available.
Task-number: QTCREATORBUG-4380
Reviewed-by: Erik Verbruggen
Having a duplicate prototype chain - once in FakeMetaObjects and once
in QmlObjectValues was unnecessary. Now FMOs don't contain references
which may allow other simplifications.
Previously they were leaked when a qmldump or the C++ exported QML
type list updated.
Just deleting the previous FakeMetaObjects is not an option, as they
might still be used in a QmlObjectValue owned by an Engine.
Reviewed-by: Erik Verbruggen
If there's a library.xml file next to the qmldir file, Creator will
read that instead of trying to run qmldump on the library.
Reviewed-by: Erik Verbruggen
