Bug 68011 [java search] "Search the JRE System Libraries" looks like a local preference but behaves as a global one... [search]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/SearchMessages.java
public static String ImplementOccurrencesFinder_invalidTarget;
	public static String ImplementOccurrencesFinder_searchfor;
	public static String ImplementOccurrencesFinder_label_singular;
	public static String ImplementOccurrencesFinder_label_plural;
	public static String JavaSearchOperation_singularDeclarationsPostfix;
	public static String JavaSearchOperation_singularReferencesPostfix;
	public static String JavaSearchOperation_singularReadReferencesPostfix;
	public static String JavaSearchOperation_singularWriteReferencesPostfix;
	public static String JavaSearchOperation_singularImplementorsPostfix;
	public static String JavaSearchOperation_singularOccurrencesPostfix;
	public static String JavaSearchOperation_pluralDeclarationsPostfix;
	public static String JavaSearchOperation_pluralReferencesPostfix;
	public static String JavaSearchOperation_pluralReadReferencesPostfix;
	public static String JavaSearchOperation_pluralWriteReferencesPostfix;
	public static String JavaSearchOperation_pluralImplementorsPostfix;
	public static String JavaSearchOperation_pluralOccurrencesPostfix;
	public static String JavaElementAction_typeSelectionDialog_title;
	public static String JavaElementAction_typeSelectionDialog_message;
	public static String JavaElementAction_error_open_message;
	public static String JavaElementAction_operationUnavailable_title;
	public static String JavaElementAction_operationUnavailable_generic;
	public static String JavaElementAction_operationUnavailable_field;
	public static String JavaElementAction_operationUnavailable_interface;
	public static String WorkspaceScope;
	public static String WorkingSetScope;
	public static String SelectionScope;
	public static String EnclosingProjectsScope;
	public static String EnclosingProjectScope;
	public static String ProjectScope;
	public static String HierarchyScope;