Add wxOVERRIDE to test files

And cleanup some tailing spaces and tabs.

tests/events/clone.cpp

@@ -55,14 +55,14 @@ void EventCloneTestCase::CheckAll()
     for (; ci; ci = ci->GetNext())
     {
         wxString cn = wxString(ci->GetClassName());
-    
+
         // is this class derived from wxEvent?
         if ( !ci->IsKindOf(CLASSINFO(wxEvent)) ||
              cn == "wxEvent" )
             continue;
 
         const std::string
-            msg = std::string("Event class \"") + 
+            msg = std::string("Event class \"") +
                   std::string(cn.c_str()) + "\"";
 
         CPPUNIT_ASSERT_MESSAGE( msg, ci->IsDynamic() );

tests/events/keyboard.cpp

@@ -197,8 +197,8 @@ class KeyboardEventTestCase : public CppUnit::TestCase
 public:
     KeyboardEventTestCase() {}
 
-    virtual void setUp();
-    virtual void tearDown();
+    virtual void setUp() wxOVERRIDE;
+    virtual void tearDown() wxOVERRIDE;
 
 private:
     CPPUNIT_TEST_SUITE( KeyboardEventTestCase );

tests/events/propagation.cpp

@@ -234,8 +234,8 @@ class EventPropagationTestCase : public CppUnit::TestCase
 public:
     EventPropagationTestCase() {}
 
-    virtual void setUp();
-    virtual void tearDown();
+    virtual void setUp() wxOVERRIDE;
+    virtual void tearDown() wxOVERRIDE;
 
 private:
     CPPUNIT_TEST_SUITE( EventPropagationTestCase );