Fix TextInput test failures.

emitCursorPositionChanged won't emit cursorPositionChanged if the
cursor position hasn't changed but that doesn't mean the micro focus
hasn't changed, so emit updateMicroFocus changed when
cursorPositionChanged isn't.

Task-number: QTBUG-21017 QTBUG-21011
Change-Id: Id0b6bd5aed16563b7b5cce643745e453ba4857a5
Reviewed-on: http://codereview.qt.nokia.com/4181
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Martin Jones <martin.jones@nokia.com>

src/gui/widgets/qlinecontrol.cpp

@@ -520,6 +520,7 @@ void QLineControl::processInputMethodEvent(QInputMethodEvent *event)
             cursorPositionChanged = true;
         }
     }
+
 #ifndef QT_NO_IM
     setPreeditArea(m_cursor, event->preeditString());
 #endif //QT_NO_IM
@@ -688,6 +689,8 @@ bool QLineControl::finishChange(int validateFromState, bool update, bool edited)
         m_selDirty = false;
         emit selectionChanged();
     }
+    if (m_cursor == m_lastCursorPos)
+        updateMicroFocus();
     emitCursorPositionChanged();
     return true;
 }