Merge ExtendedReporter into Reporter.

compile/interface/src/main/scala/xsbt/DelegatingReporter.scala

@@ -27,12 +27,7 @@ private final class DelegatingReporter(warnFatal: Boolean, private[this] var del
 	override def hasErrors = delegate.hasErrors
 	override def hasWarnings = delegate.hasWarnings
 	def problems = delegate.problems
-	override def comment(pos: Position, msg: String) {
-		delegate match {
-			case ext: xsbti.ExtendedReporter => ext.comment(convert(pos), msg)
-			case _ =>
-		}
-	}
+	override def comment(pos: Position, msg: String) = delegate.comment(convert(pos), msg)
 
 	override def reset =
 	{

compile/src/main/scala/sbt/LoggerReporter.scala

@@ -64,6 +64,7 @@ class LoggerReporter(maximumErrors: Int, log: Logger, sourcePositionMapper: Posi
 	def hasWarnings = count.get(Warn) > 0
 	def hasErrors = count.get(Error) > 0
 	def problems: Array[Problem] = allProblems.toArray
+	def comment(pos: Position, msg: String) {}
 
 	def printSummary()
 	{

interface/src/main/java/xsbti/ExtendedReporter.java

@@ -1,10 +0,0 @@
-/* sbt -- Simple Build Tool
- * Copyright 2012 Eugene Vigdorchik
- */
-package xsbti;
-
-/** An addition to standard reporter. Used by the IDE. */
-public interface ExtendedReporter extends Reporter
-{
-	public void comment(Position pos, String msg);
-}

interface/src/main/java/xsbti/Reporter.java

@@ -17,4 +17,6 @@ public interface Reporter
 	public Problem[] problems();
 	/** Logs a message.*/
 	public void log(Position pos, String msg, Severity sev);
-}
+	/** Reports a comment. */
+	public void comment(Position pos, String msg);
+}