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
buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("import test2.I1;\n");
		buf.append("public class I1Impl implements I1 {}\n");
		pack1.createCompilationUnit("I1Impl.java", buf.toString(), false, null);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class I1 {}\n");
		pack1.createCompilationUnit("I1.java", buf.toString(), false, null);
		
		IPackageFragment pack2= fSourceFolder.createPackageFragment("test2", false, null);
		buf= new StringBuffer();
		buf.append("package test2;\n");
		buf.append("public interface I1 {\n");
		buf.append("    public static int N= 10;\n");
		buf.append("}\n");
		pack2.createCompilationUnit("I1.java", buf.toString(), false, null);
		
		CleanUpRefactoring refactoring= new CleanUpRefactoring();
		refactoring.addCompilationUnit(cu1);
		
		ICleanUp cleanUp= new CodeStyleCleanUp(CodeStyleCleanUp.CHANGE_INDIRECT_STATIC_ACCESS_TO_DIRECT);
		refactoring.addCleanUp(cleanUp);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E1 {\n");
		buf.append("    public void foo() {\n");