fixing linking against non-installed libs

Task-number: QTBUG-27427
Change-Id: I947d67b242e5a882f08a0672eaad076f818bf29d
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

tests/auto/xmlpatterns.pri

@@ -9,6 +9,7 @@ wince*: {
     QT += network
 }
 QT -= gui
+QMAKE_RPATHLINKDIR *= $$QT.gui.libs
 
 XMLPATTERNS_SDK = QtXmlPatternsSDK
 if(!debug_and_release|build_pass):CONFIG(debug, debug|release) {