almost duplicate lines

[Jonathan Gibbons]

The following suspicious group of lines is in javadoc TypeMaker, round 
about line 67.

-- Jon

         if (considerAnnotations
                 && t.isAnnotated()) {
             return new AnnotatedTypeImpl(env, 
(com.sun.tools.javac.code.Type.AnnotatedType) t);
         }

         if (t.isAnnotated()) {
             Type.AnnotatedType at = (Type.AnnotatedType) t;
             return new AnnotatedTypeImpl(env, at);
         }