Adapt parser to soft keyword scheme

This fixes some rebase breakage.

Author: odersky

compiler/src/dotty/tools/dotc/parsing/Parsers.scala

@@ -1209,7 +1209,7 @@ object Parsers {
       case FOR =>
         forExpr()
       case _ =>
-        if (isIdent(nme.INLINEkw)) {
+        if (isIdent(nme.inline) && !in.inModifierPosition) {
           val start = in.skipToken()
           in.token match {
             case IF =>