Bug 123625 [cleanup] Generated Serial Version UIDs clean up
Add a fix to the cleanup refactoring which generates missing generated serial version IDs. The code of the existing serial version quickfix has been extracted and is now available in class SerialVersionComputationHelper. For details on how to use this class please refer to the existing quickfix.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/CleanUpTest.java
private CompilationUnit[] compile(ICompilationUnit[] units) {
		CompilationUnit[] result= new CompilationUnit[units.length];
		for (int i= 0; i < units.length; i++) {
			result[i]= compile(units[i]);
		}
		return result;
	}
	
	private CompilationUnit compile(ICompilationUnit compilationUnit) {
		CompilationUnit result= JavaPlugin.getDefault().getASTProvider().getAST(compilationUnit, ASTProvider.WAIT_YES, null);
		if (result == null) {
			
			ASTParser parser= ASTParser.newParser(ASTProvider.AST_LEVEL);
			parser.setSource(compilationUnit);
			parser.setResolveBindings(true);
			result= (CompilationUnit) parser.createAST(null);
		}
		return result;
	}
	
	private void setOptions(ICleanUp fix) {
		setOptions(new ICleanUp[] {fix});
	}
	
	private void setOptions(ICleanUp[] fixes) {
		Hashtable options= JavaCore.getOptions();
		for (Iterator iter= options.keySet().iterator(); iter.hasNext();) {
			String key= (String)iter.next();
			String value= (String)options.get(key);
			if ("error".equals(value) || "warning".equals(value)) {