chore: add scala.language.2 to scala.sys

Author: hamzaremmal

library/src/scala/sys/BooleanProp.scala

@@ -13,6 +13,7 @@
 package scala
 package sys
 
+import scala.language.`2`
 import scala.language.implicitConversions
 
 /** A few additional conveniences for Boolean properties.

library/src/scala/sys/Prop.scala

@@ -13,6 +13,8 @@
 package scala
 package sys
 
+import scala.language.`2`
+
 /** A lightweight interface wrapping a property contained in some
  *  unspecified map.  Generally it'll be the system properties but this
  *  is not a requirement.

library/src/scala/sys/PropImpl.scala

@@ -13,6 +13,7 @@
 package scala
 package sys
 
+import scala.language.`2`
 import scala.collection.mutable
 
 /** The internal implementation of scala.sys.Prop.

library/src/scala/sys/ShutdownHookThread.scala

@@ -13,6 +13,8 @@
 package scala
 package sys
 
+import scala.language.`2`
+
 /** A minimal Thread wrapper to enhance shutdown hooks.  It knows
  *  how to unregister itself.
  */

library/src/scala/sys/SystemProperties.scala

@@ -13,6 +13,7 @@
 package scala
 package sys
 
+import scala.language.`2`
 import scala.collection.{mutable, Iterator}
 import scala.jdk.CollectionConverters._
 import java.security.AccessControlException

library/src/scala/sys/package.scala

@@ -12,6 +12,7 @@
 
 package scala
 
+import scala.language.`2`
 import scala.collection.immutable.ArraySeq
 import scala.jdk.CollectionConverters._
 

library/src/scala/sys/process/BasicIO.scala

@@ -14,6 +14,7 @@ package scala
 package sys
 package process
 
+import scala.language.`2`
 import processInternal._
 import java.io.{ BufferedReader, InputStreamReader, FilterInputStream, FilterOutputStream }
 import java.util.concurrent.LinkedBlockingQueue

library/src/scala/sys/process/Parser.scala

@@ -12,6 +12,7 @@
 
 package scala.sys.process
 
+import scala.language.`2`
 import scala.annotation.tailrec
 
 /** A simple enough command line parser using shell quote conventions.

library/src/scala/sys/process/Process.scala

@@ -14,6 +14,7 @@ package scala
 package sys
 package process
 
+import scala.language.`2`
 import processInternal._
 import ProcessBuilder._
 import scala.language.implicitConversions

library/src/scala/sys/process/ProcessBuilder.scala

@@ -14,6 +14,7 @@ package scala
 package sys
 package process
 
+import scala.language.`2`
 import processInternal._
 import ProcessBuilder.{Sink, Source}