Search for references to fields {typename}.* finds tons of wrong potential matches

See: https://bugs.eclipse.org/bugs/show_bug.cgi?id=425407

> master, BETA_JAVA8, at least back to 3.6.2. Could be a variant of [bug 423409](https://bugs.eclipse.org/bugs/show_bug.cgi?id=423409).
>
> A search for references to fields {typename}.* finds tons of wrong potential matches:
>
> - Import > Plug-ins and Fragments > Binary projects:
Choose org.eclipse.jdt.core and org.eclipse.core.commands
>
> - Search > Java...:
For "org.eclipse.jdt.core.dom.QualifiedName.*", Fields, References, Workspace
>
> => Finds completely inexplicable potential matches like "@see #describe" in > org.eclipse.core.runtime.content.IContentDescriber#getSupportedOptions()
>
> This also happens if everything is in source.