Bug 16733 Builder pref - Cannot exclude folder from resource copying
Build 20020521 - F1 UI builder pref page currently prevents enter a folder name for the resource copy exclusion filter (folder is specified with a '/' suffix). Since 20020521, JDT/Core now supports excluding folders: The setting allowing for filtering resource copy now also supports folder filtering. Folder names are recognized by their '/' suffix, e.g. "META-INF/" specifies filtering out all folder named 'META-INF' (and their contents)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaBuilderPreferencePage.java
resourceFilterLabel.doFillIntoGrid(composite, 2);
		LayoutUtil.setWidthHint(resourceFilterLabel.getLabelControl(null), convertWidthInCharsToPixels(80));
		fResourceFilterField.doFillIntoGrid(composite, 2);
		LayoutUtil.setHorizontalGrabbing(fResourceFilterField.getTextControl(null));
		LayoutUtil.setWidthHint(fResourceFilterField.getTextControl(null), convertWidthInCharsToPixels(50));
		fAbortInvalidClasspathField.doFillIntoGrid(composite, 2);
		return composite;
	}
	
	/**
	 * Initializes the current options (read from preference store)
	 */
	public static void initDefaults(IPreferenceStore store) {
	}	
	
	/*
	 * @see IWorkbenchPreferencePage#init(IWorkbench)
	 */
	public void init(IWorkbench workbench) {
	}
	/*
	 * @see IPreferencePage#performOk()
	 */
	public boolean performOk() {
		String[] allKeys= getAllKeys();
		
		
		Hashtable actualOptions= JavaCore.getOptions();
		boolean hasChanges= false;
		for (int i= 0; i < allKeys.length; i++) {