Move TreeMapWithStages to dotty.tools.dotc.staging

Author: nicolasstucki

compiler/src/dotty/tools/dotc/staging/PCPCheckAndHeal.scala

@@ -14,7 +14,6 @@ import dotty.tools.dotc.core.Types._
 import dotty.tools.dotc.util.SrcPos
 import dotty.tools.dotc.util.Spans._
 import dotty.tools.dotc.transform.SymUtils._
-import dotty.tools.dotc.transform.TreeMapWithStages
 import dotty.tools.dotc.typer.Checking
 import dotty.tools.dotc.typer.Implicits.SearchFailureType
 import dotty.tools.dotc.core.Annotations._

compiler/src/dotty/tools/dotc/transform/TreeMapWithStages.scala renamed to compiler/src/dotty/tools/dotc/staging/TreeMapWithStages.scala

@@ -1,5 +1,5 @@
 package dotty.tools.dotc
-package transform
+package staging
 
 import dotty.tools.dotc.ast.{TreeMapWithImplicits, tpd}
 import dotty.tools.dotc.config.Printers.staging