Export TypeDescriptionReader

Allows use in external tools. Unsupported still, but possible.

Change-Id: I947adc6a6dbccf676112ac77e186134fb660efd2
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/libs/qmljs/qmljstypedescriptionreader.h

@@ -49,7 +49,7 @@ class UiScriptBinding;
 class SourceLocation;
 }
 
-class TypeDescriptionReader
+class QMLJS_EXPORT TypeDescriptionReader
 {
     Q_DECLARE_TR_FUNCTIONS(QmlJS::TypeDescriptionReader)