Merge pull request scala#1004 from paulp/topic/warnings-2.10.x

Topic/warnings 2.10.x

Author: paulp

build.xml

@@ -1294,7 +1294,7 @@ QUICK BUILD (QUICK)
     <scalacfork
       destdir="${build-quick.dir}/classes/scalacheck"
       compilerpathref="quick.classpath"
-      params="${scalac.args.quick}"
+      params="${scalac.args.quick} -nowarn"
       srcdir="${src.dir}/scalacheck"
       jvmargs="${scalacfork.jvmargs}">
       <include name="**/*.scala"/>
@@ -1942,7 +1942,7 @@ BOOTSTRAPPING BUILD (STRAP)
     <scalacfork
       destdir="${build-strap.dir}/classes/scalacheck"
       compilerpathref="pack.classpath"
-      params="${scalac.args.quick}"
+      params="${scalac.args.quick} -nowarn"
       srcdir="${src.dir}/scalacheck"
       jvmargs="${scalacfork.jvmargs}">
       <include name="**/*.scala"/>

src/actors-migration/scala/actors/Pattern.scala

@@ -1,6 +1,7 @@
 package scala.actors
 
 import scala.concurrent.util.Duration
+import language.implicitConversions
 
 object pattern {
 

src/actors-migration/scala/actors/StashingActor.scala

@@ -3,6 +3,7 @@ package scala.actors
 import scala.collection._
 import scala.concurrent.util.Duration
 import java.util.concurrent.TimeUnit
+import language.implicitConversions
 
 object StashingActor extends Combinators {
   implicit def mkBody[A](body: => A) = new InternalActor.Body[A] {

src/actors-migration/scala/actors/Timeout.scala

@@ -10,6 +10,7 @@ package scala.actors
 
 import scala.concurrent.util.Duration
 import java.util.concurrent.TimeUnit
+import language.implicitConversions
 
 case class Timeout(duration: Duration) {
   def this(timeout: Long) = this(Duration(timeout, TimeUnit.MILLISECONDS))

src/actors/scala/actors/AbstractActor.scala

@@ -6,9 +6,10 @@
 **                          |/                                          **
 \*                                                                      */
 
-
 package scala.actors
 
+import language.higherKinds
+
 /**
  * @author Philipp Haller
  *

src/actors/scala/actors/Actor.scala

@@ -1,5 +1,3 @@
-
-
 /*                     __                                               *\
 **     ________ ___   / /  ___     Scala API                            **
 **    / __/ __// _ | / /  / _ |    (c) 2005-2011, LAMP/EPFL             **
@@ -12,6 +10,7 @@ package scala.actors
 
 import scala.util.control.ControlThrowable
 import java.util.{Timer, TimerTask}
+import language.implicitConversions
 
 /**
  * Provides functions for the definition of actors, as well as actor

src/actors/scala/actors/CanReply.scala

@@ -6,9 +6,10 @@
 **                          |/                                          **
 \*                                                                      */
 
-
 package scala.actors
 
+import language.higherKinds
+
 /**
  * Defines result-bearing message send operations.
  *

src/actors/scala/actors/Combinators.scala

@@ -10,6 +10,8 @@
 
 package scala.actors
 
+import language.implicitConversions
+
 private[actors] trait Combinators {
 
   /**

src/actors/scala/actors/MQueue.scala

@@ -121,7 +121,7 @@ private[actors] class MQueue[Msg >: Null](protected val label: String) {
    *  or `'''null'''` if `p` fails for all of them.
    */
   def extractFirst(p: (Msg, OutputChannel[Any]) => Boolean): MQueueElement[Msg] =
-    removeInternal(0)(p) orNull
+    removeInternal(0)(p).orNull
 
   def extractFirst(pf: PartialFunction[Msg, Any]): MQueueElement[Msg] = {
     if (isEmpty)    // early return

src/actors/scala/actors/Reactor.scala

@@ -12,6 +12,7 @@ package scala.actors
 import scala.actors.scheduler.{DelegatingScheduler, ExecutorScheduler,
                                ForkJoinScheduler, ThreadPoolConfig}
 import java.util.concurrent.{ThreadPoolExecutor, TimeUnit, LinkedBlockingQueue}
+import language.implicitConversions
 
 private[actors] object Reactor {