interface kit: added compatibility symbols for GCC4

* InvalidateLayout method for BBox, BButton, BCheckBox, BMenuField,
  BScrollView, BSlider, BStringView, BTextControl.

src/kits/interface/Box.cpp

@@ -874,11 +874,9 @@ BBox::_ValidateLayoutData()
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__4BBoxb(BBox* box, bool descendants)
+B_IF_GCC_2(InvalidateLayout__4BBoxb, _ZN4BBox16InvalidateLayoutEb)(
+	BBox* box, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -886,5 +884,3 @@ InvalidateLayout__4BBoxb(BBox* box, bool descendants)
 	box->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif

src/kits/interface/Button.cpp

@@ -781,11 +781,9 @@ BButton::_DrawFocusLine(float x, float y, float width, bool visible)
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__7BButtonb(BView* view, bool descendants)
+B_IF_GCC_2(InvalidateLayout__7BButtonb, _ZN7BButton16InvalidateLayoutEb)(
+	BView* view, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -793,5 +791,3 @@ InvalidateLayout__7BButtonb(BView* view, bool descendants)
 	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif

src/kits/interface/CheckBox.cpp

@@ -624,11 +624,9 @@ BCheckBox::operator=(const BCheckBox &)
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__9BCheckBoxb(BCheckBox* box, bool descendants)
+B_IF_GCC_2(InvalidateLayout__9BCheckBoxb, _ZN9BCheckBox16InvalidateLayoutEb)(
+	BCheckBox* box, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -636,5 +634,3 @@ InvalidateLayout__9BCheckBoxb(BCheckBox* box, bool descendants)
 	box->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);	
 }
 
-
-#endif

src/kits/interface/MenuField.cpp

@@ -1511,11 +1511,9 @@ BMenuField::MenuBarLayoutItem::Instantiate(BMessage* from)
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__10BMenuFieldb(BMenuField* field, bool descendants)
+B_IF_GCC_2(InvalidateLayout__10BMenuFieldb, _ZN10BMenuField16InvalidateLayoutEb)(
+	BMenuField* field, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -1523,5 +1521,3 @@ InvalidateLayout__10BMenuFieldb(BMenuField* field, bool descendants)
 	field->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif

src/kits/interface/ScrollView.cpp

@@ -898,11 +898,9 @@ void BScrollView::_ReservedScrollView3() {}
 void BScrollView::_ReservedScrollView4() {}
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__11BScrollViewb(BScrollView* view, bool descendants)
+B_IF_GCC_2(InvalidateLayout__11BScrollViewb,
+	_ZN11BScrollView16InvalidateLayoutEb)(BScrollView* view, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -910,5 +908,3 @@ InvalidateLayout__11BScrollViewb(BScrollView* view, bool descendants)
 	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif

src/kits/interface/Slider.cpp

@@ -2230,8 +2230,12 @@ _ReservedSlider3__7BSlider(BSlider* slider, const BFont* font,
 }
 
 
+#endif	// __GNUC__ < 3
+
+
 extern "C" void
-InvalidateLayout__7BSliderb(BView* view, bool descendants)
+B_IF_GCC_2(InvalidateLayout__7BSliderb, _ZN7BSlider16InvalidateLayoutEb)(
+	BView* view, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -2239,4 +2243,3 @@ InvalidateLayout__7BSliderb(BView* view, bool descendants)
 	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-#endif	// __GNUC__ < 3

src/kits/interface/StringView.cpp

@@ -454,11 +454,9 @@ BStringView::_ValidatePreferredSize()
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__11BStringViewb(BView* view, bool descendants)
+B_IF_GCC_2(InvalidateLayout__11BStringViewb,
+	_ZN11BStringView16InvalidateLayoutEb)(BView* view, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -466,5 +464,3 @@ InvalidateLayout__11BStringViewb(BView* view, bool descendants)
 	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif

src/kits/interface/TextControl.cpp

@@ -1480,11 +1480,9 @@ BTextControl::TextViewLayoutItem::Instantiate(BMessage* from)
 }
 
 
-#if __GNUC__ == 2
-
-
 extern "C" void
-InvalidateLayout__12BTextControlb(BView* view, bool descendants)
+B_IF_GCC_2(InvalidateLayout__12BTextControlb,
+	_ZN12BTextControl16InvalidateLayoutEb)(BView* view, bool descendants)
 {
 	perform_data_layout_invalidated data;
 	data.descendants = descendants;
@@ -1492,5 +1490,3 @@ InvalidateLayout__12BTextControlb(BView* view, bool descendants)
 	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
 }
 
-
-#endif