[i623] added eclipse code for generating @javax.annotation.Generated, and refactored java impl to reduce DRY violations. -f pretty now includes skipping generation of this annotation, and updated ALL the test cases.

test/transform/resource/after-ecj/GetterNone.java

@@ -6,7 +6,7 @@ import lombok.Getter;
   GetterNone() {
     super();
   }
-  public @java.lang.SuppressWarnings("all") int getI() {
+  public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") int getI() {
     return this.i;
   }
 }