ProductN, and method synthesis toolbox.

- Finished giving case classes a ProductN parent, and flipped it on. The
"finish" part involved not breaking existing code where case classes
manually extend the appropriate ProductN. (Like, Tuple 1-22.)

- Generalized most of SyntheticMethods to ease method creation and class
manipulation in general.

- Fixed bugs related to the above, like the fact that this used to be a
compile error:

  scala> case class Foo() extends Serializable
  <console>:28: error: trait Serializable is inherited twice
         case class Foo() extends Serializable
                                  ^
It feels like there's a better way to eliminate the duplicate parents,
but after spending a lot of time chasing my tail in that peril-fraught
zone between namer and typer, I don't see an easy path to improve on
it.  Closes SI-1799.  For that modification to Typers, review by odersky.

2 files changed, 13 insertions, 11 deletions

diff --git a/test/files/scalap/caseClass/result.test b/test/files/scalap/caseClass/result.test
index 9b65be4b48..d243ae640b 100644
--- a/test/files/scalap/caseClass/result.test
+++ b/test/files/scalap/caseClass/result.test
@@ -1,13 +1,14 @@
-case class CaseClass[A <: scala.Seq[scala.Int]](i : A, s : scala.Predef.String) extends java.lang.Object with scala.ScalaObject with scala.Product with scala.Serializable {
+case class CaseClass[A <: scala.Seq[scala.Int]](i : A, s : scala.Predef.String) extends java.lang.Object with scala.ScalaObject with scala.Product with scala.Serializable with scala.Product2[A, scala.Predef.String] {
   val i : A = { /* compiled code */ }
   val s : scala.Predef.String = { /* compiled code */ }
   def foo : scala.Int = { /* compiled code */ }
   def copy[A <: scala.Seq[scala.Int]](i : A, s : scala.Predef.String) : CaseClass[A] = { /* compiled code */ }
+  override def productPrefix : java.lang.String = { /* compiled code */ }
+  override def productIterator : scala.collection.Iterator[scala.Any] = { /* compiled code */ }
+  def canEqual(x$1 : scala.Any) : scala.Boolean = { /* compiled code */ }
+  def _1 : A = { /* compiled code */ }
+  def _2 : scala.Predef.String = { /* compiled code */ }
   override def hashCode() : scala.Int = { /* compiled code */ }
-  override def toString() : scala.Predef.String = { /* compiled code */ }
+  override def toString() : java.lang.String = { /* compiled code */ }
   override def equals(x$1 : scala.Any) : scala.Boolean = { /* compiled code */ }
-  override def productPrefix : java.lang.String = { /* compiled code */ }
-  override def productArity : scala.Int = { /* compiled code */ }
-  override def productElement(x$1 : scala.Int) : scala.Any = { /* compiled code */ }
-  override def canEqual(x$1 : scala.Any) : scala.Boolean = { /* compiled code */ }
 }
diff --git a/test/files/scalap/caseObject/result.test b/test/files/scalap/caseObject/result.test
index 556c5554a2..8f8da7d9bd 100644
--- a/test/files/scalap/caseObject/result.test
+++ b/test/files/scalap/caseObject/result.test
@@ -1,10 +1,11 @@
 case object CaseObject extends java.lang.Object with scala.ScalaObject with scala.Product with scala.Serializable {
   def bar : scala.Int = { /* compiled code */ }
-  final override def hashCode() : scala.Int = { /* compiled code */ }
-  final override def toString() : java.lang.String = { /* compiled code */ }
   override def productPrefix : java.lang.String = { /* compiled code */ }
-  override def productArity : scala.Int = { /* compiled code */ }
-  override def productElement(x$1 : scala.Int) : scala.Any = { /* compiled code */ }
-  override def canEqual(x$1 : scala.Any) : scala.Boolean = { /* compiled code */ }
+  def productArity : scala.Int = { /* compiled code */ }
+  def productElement(x$1 : scala.Int) : scala.Any = { /* compiled code */ }
+  override def productIterator : scala.collection.Iterator[scala.Any] = { /* compiled code */ }
+  def canEqual(x$1 : scala.Any) : scala.Boolean = { /* compiled code */ }
+  override def hashCode() : scala.Int = { /* compiled code */ }
+  override def toString() : java.lang.String = { /* compiled code */ }
   protected def readResolve() : java.lang.Object = { /* compiled code */ }
 }