more ListOfNil => Nil

Even more trees (together with Apply nodes produced by templateParents
and New nodes produced by New in TreeBuilders) now distinguish nullary
argument list from empty argument list.

src/compiler/scala/tools/nsc/ast/TreeGen.scala

@@ -58,7 +58,7 @@ abstract class TreeGen extends scala.reflect.internal.TreeGen with TreeDSL {
   def mkUnchecked(expr: Tree): Tree = atPos(expr.pos) {
     // This can't be "Annotated(New(UncheckedClass), expr)" because annotations
     // are very picky about things and it crashes the compiler with "unexpected new".
-    Annotated(New(scalaDot(UncheckedClass.name), ListOfNil), expr)
+    Annotated(New(scalaDot(UncheckedClass.name), Nil), expr)
   }
   // if it's a Match, mark the selector unchecked; otherwise nothing.
   def mkUncheckedMatch(tree: Tree) = tree match {

src/compiler/scala/tools/nsc/ast/parser/Parsers.scala

@@ -2106,7 +2106,7 @@ self =>
     def annotationExpr(): Tree = atPos(in.offset) {
       val t = exprSimpleType()
       if (in.token == LPAREN) New(t, multipleArgumentExprs())
-      else New(t, ListOfNil)
+      else New(t, Nil)
     }
 
 /* -------- PARAMETERS ------------------------------------------- */

src/compiler/scala/tools/nsc/ast/parser/TreeBuilder.scala

@@ -237,7 +237,7 @@ abstract class TreeBuilder {
           atPos(npos) {
             New(
               Ident(x) setPos npos.focus,
-              ListOfNil)
+              Nil)
           }
         )
       }

src/compiler/scala/tools/nsc/javac/JavaParsers.scala

@@ -551,7 +551,7 @@ trait JavaParsers extends ast.parser.ParsersCommon with JavaScanners {
               if (parentToken == AT && in.token == DEFAULT) {
                 val annot =
                   atPos(pos) {
-                    New(Select(scalaDot(nme.runtime), tpnme.AnnotationDefaultATTR), ListOfNil)
+                    New(Select(scalaDot(nme.runtime), tpnme.AnnotationDefaultATTR), Nil)
                   }
                 mods1 = mods1 withAnnotations List(annot)
                 skipTo(SEMI)