removed deprecation and some unapply stuff

Author: Burak Emir

src/library/scala/xml/Atom.scala

@@ -28,8 +28,8 @@ class Atom[+A]( val data: A ) extends SpecialNode {
   def label = "#PCDATA";
 
  override def equals(x:Any) = x match {
-    case s:Atom[A] => data == s.data ;
-    case _ => false;
+    case s:Atom[_] => data == s.data
+    case _         => false;
   }
 
   /** hashcode for this Text */

src/library/scala/xml/Group.scala

@@ -29,7 +29,7 @@ case class Group(val nodes: Seq[Node]) extends Node {
   override def equals(x: Any) = x match {
     case z:Group     => (length == z.length) && sameElements(z)
     case z:Node      => (length == 1) && z == apply(0)
-    case z:Seq[Node] => sameElements(z)
+    case z:Seq[_]    => sameElements(z)
     case z:String    => text == z
     case _           => false;
   }

src/library/scala/xml/NodeSeq.scala

@@ -43,7 +43,7 @@ abstract class NodeSeq extends Seq[Node] {
   /** structural equality */
   override def equals(x: Any) = x match {
     case z:Node      => (length == 1) && z == apply(0)
-    case z:Seq[Node] => sameElements(z)
+    case z:Seq[_]    => sameElements(z)
     case z:String    => text == z
     case _           => false;
   }

src/library/scala/xml/PrettyPrinter.scala

@@ -143,7 +143,7 @@ class PrettyPrinter( width:Int, step:Int ) {
     val it = n.child.elements
     while (it.hasNext)
       it.next match {
-        case _:Atom[Any] | _:Comment | _:EntityRef | _:ProcInstr =>
+        case _:Atom[_] | _:Comment | _:EntityRef | _:ProcInstr =>
         case _:Node =>
           return false
       }
@@ -158,7 +158,7 @@ class PrettyPrinter( width:Int, step:Int ) {
 
       case Text(s) if s.trim() == "" =>
         ;
-      case _:Atom[Any] | _:Comment | _:EntityRef | _:ProcInstr =>
+      case _:Atom[_] | _:Comment | _:EntityRef | _:ProcInstr =>
         makeBox( ind, node.toString().trim() )
       case _ =>
         val test = {

src/library/scala/xml/dtd/ElementValidator.scala

@@ -44,11 +44,12 @@ class ElementValidator() extends Function1[Node,Boolean] {
     this.adecls = adecls;
 
   def getIterator(nodes: Seq[Node], skipPCDATA: Boolean): Iterator[ElemName] =
-    nodes . toList
-	  . filter { x => x match {
-            case y:SpecialNode => y match {
+    nodes.toList
+	 .filter { x => x match {
+           case y:SpecialNode => y match {
 
-              case a:Atom[String] if (a.data.asInstanceOf[String].trim().length() == 0 ) =>
+             case a:Atom[_] if (a.data.isInstanceOf[String] &&
+                                a.data.asInstanceOf[String].trim.length == 0 ) =>
                 false; // always skip all-whitespace nodes
 
               case _ =>