Fixing documentation output to say 'def'

doc_fix.patch

Index: src/main/scala/sbt/DefaultProject.scala
===================================================================
--- src/main/scala/sbt/DefaultProject.scala	(revision 1129)
+++ src/main/scala/sbt/DefaultProject.scala	(working copy)
@@ -445,7 +445,7 @@
 	{
 		log.warn("No Main-Class attribute will be added automatically added:")
 		log.warn("Multiple classes with a main method were detected.  Specify main class explicitly with:")
-		log.warn("     override mainClass = Some(\"className\")")
+		log.warn("     override def mainClass = Some(\"className\")")
 	}
 	private def mapScalaModule(in: Iterable[_], id: String) =
 	{
@@ -511,4 +511,4 @@
 	private def isScalaLibraryJar(file: File) = isNamed(file)(ScalaLibraryPrefix)
 	private def isNamed(file: File)(name: String) = file.getName.startsWith(name)
 
-}
\ No newline at end of file
+}