the plugins already declare which modules they belong to.
additionally, we allow plugins to declare which modules they "extend" -
e.g., while the Quick accessibility plugin belongs to Gui's 'accessiblity'
type, it makes no sense to link it unless Quick is actually linked.
finally, it is possible to manually override the plugins which are linked
for a particular type, by setting QTPLUGIN.<type> (to '-' if no plugins
of this type should be linked at all).
Task-number: QTBUG-35195
Change-Id: I8273d167a046eb3f3c1c584dc6e3798212a2fa31
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>