javac builder implementation. Passes all tests.

Added toString() impl for builders in both eclipse and javac.
Added all documentation, though it'll need some reviewing.

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

@@ -17,6 +17,9 @@ import java.util.List;
     public @java.lang.SuppressWarnings("all") BuilderSimple<T> build() {
       return new BuilderSimple<T>(yes, also);
     }
+    public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+      return (((("BuilderSimple.BuilderSimpleBuilder(yes=" + this.yes) + ", also=") + this.also) + ")");
+    }
   }
   private final int noshow = 0;
   private final int yes;