qt4: also find QtUiTools when cross compiling with mingw.

Modules/FindQt4.cmake

@@ -862,10 +862,11 @@ IF (QT_QMAKE_EXECUTABLE AND QTVERSION)
         )
   ENDFOREACH(QT_MODULE)
 
-  # QtUiTools not with other frameworks with binary installation (in /usr/lib)
-  IF(Q_WS_MAC AND QT_QTCORE_LIBRARY_RELEASE AND NOT QT_QTUITOOLS_LIBRARY_RELEASE)
+  # QtUiTools is sometimes not in the same directory as the other found libraries
+  # e.g. on Mac, its never a framework like the others are
+  IF(QT_QTCORE_LIBRARY_RELEASE AND NOT QT_QTUITOOLS_LIBRARY_RELEASE)
     FIND_LIBRARY(QT_QTUITOOLS_LIBRARY_RELEASE NAMES QtUiTools${QT_LIBINFIX} PATHS ${QT_LIBRARY_DIR})
-  ENDIF(Q_WS_MAC AND QT_QTCORE_LIBRARY_RELEASE AND NOT QT_QTUITOOLS_LIBRARY_RELEASE)
+  ENDIF(QT_QTCORE_LIBRARY_RELEASE AND NOT QT_QTUITOOLS_LIBRARY_RELEASE)
 
   # Set QT_QTDESIGNERCOMPONENTS_LIBRARY
   FIND_LIBRARY(QT_QTDESIGNERCOMPONENTS_LIBRARY_RELEASE NAMES QtDesignerComponents${QT_LIBINFIX} QtDesignerComponents${QT_LIBINFIX}4 PATHS ${QT_LIBRARY_DIR} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)