Find/Replace overlay: reorder buttons

reorder buttons such that the "whole words" button is not in front,
making the taborder more intuitive in the case that whole word search is
not supported in the current state.

fixes #1998

bundles/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/internal/findandreplace/overlay/FindReplaceOverlay.java

@@ -437,9 +437,9 @@ private void createSearchTools() {
 		searchTools = new AccessibleToolBar(searchContainer);
 		GridDataFactory.fillDefaults().grab(false, true).align(GridData.CENTER, GridData.END).applyTo(searchTools);
 
-		createWholeWordsButton();
 		createCaseSensitiveButton();
 		createRegexSearchButton();
+		createWholeWordsButton();
 		createAreaSearchButton();
 
 		@SuppressWarnings("unused")