move AbstractFileClassLoader to compiler

there doesn't seem to be anything repl-specific about it, and it's used in a few places
in the compiler

Author: mpollmeier

repl/src/dotty/tools/repl/AbstractFileClassLoader.scala renamed to compiler/src/dotty/tools/AbstractFileClassLoader.scala

@@ -11,7 +11,6 @@
  */
 
 package dotty.tools
-package repl
 
 import scala.language.unsafeNulls
 

compiler/src/dotty/tools/dotc/quoted/Interpreter.scala

@@ -9,6 +9,7 @@ import scala.reflect.ClassTag
 import java.io.{PrintWriter, StringWriter}
 import java.lang.reflect.{InvocationTargetException, Method => JLRMethod}
 
+import dotty.tools.AbstractFileClassLoader
 import dotty.tools.dotc.ast.tpd
 import dotty.tools.dotc.ast.TreeMapWithImplicits
 import dotty.tools.dotc.core.Annotations._
@@ -27,7 +28,6 @@ import dotty.tools.dotc.quoted._
 import dotty.tools.dotc.typer.ImportInfo.withRootImports
 import dotty.tools.dotc.util.SrcPos
 import dotty.tools.dotc.reporting.Message
-import dotty.tools.repl.AbstractFileClassLoader
 import dotty.tools.dotc.core.CyclicReference
 
 /** Tree interpreter for metaprogramming constructs */

compiler/src/dotty/tools/dotc/util/ClasspathFromClassloader.scala

@@ -5,7 +5,7 @@ import scala.language.unsafeNulls
 import java.net.URLClassLoader
 import java.nio.file.Paths
 
-import dotty.tools.repl.AbstractFileClassLoader
+import dotty.tools.AbstractFileClassLoader
 
 object ClasspathFromClassloader {