don't add _root_ to definitions in the empty package

main/Load.scala

@@ -497,7 +497,8 @@ object Load
 		ModuleUtilities.getObject(pluginName, loader).asInstanceOf[Plugin].settings
 
 	def importAll(values: Seq[String]) = if(values.isEmpty) Nil else values.map( _ + "._" ).mkString("import ", ", ", "") :: Nil
-	def importAllRoot(values: Seq[String]) = importAll(values.map("_root_." + _))
+	def importAllRoot(values: Seq[String]) = importAll(values map rootedName)
+	def rootedName(s: String) = if(s contains '.') "_root_." + s else s
 		
 	def findPlugins(analysis: inc.Analysis): Seq[String]  =  discover(analysis, "sbt.Plugin")
 	def findDefinitions(analysis: inc.Analysis): Seq[String]  =  discover(analysis, "sbt.Build")

sbt/src/sbt-test/project/auto-import/changes/build.sbt

@@ -1,3 +1,5 @@
 maxErrors := xyz
 
-name := "Demo"
+name := "Demo"
+
+traceLevel := zyx

sbt/src/sbt-test/project/auto-import/project/P.scala

@@ -1,7 +1,11 @@
-package name.example
-
 import sbt._
 
+object Q extends Plugin {
+	val zyx = -3
+}
+
+package name.example {
+
 object P extends Plugin {
 	val xyz = 3
 	val checkMaxErrors = TaskKey[Unit]("check-max-errors")
@@ -11,4 +15,5 @@ object P extends Plugin {
 		checkMaxErrors <<= Keys.maxErrors map { me => assert(me == xyz, "Expected maxErrors to be " + xyz + ", but it was " + me ) },
 		checkName <<= Keys.name map { n => assert(n == "Demo", "Expected name to be 'Demo', but it was '" + n + "'" ) }
 	)
+}
 }