Update for absolute/relative imports and ifelse-expressions.
diff --git a/Tools/compiler/ast.txt b/Tools/compiler/ast.txt
index aeefc98..7968a52 100644
--- a/Tools/compiler/ast.txt
+++ b/Tools/compiler/ast.txt
@@ -22,8 +22,9 @@
 While: test, body, else_&
 With: expr, vars&, body
 If: tests!, else_&
+IfExp: test, then, else_
 Exec: expr, locals&, globals&
-From: modname*, names*
+From: modname*, names*, level*
 Import: names*
 Raise: expr1&, expr2&, expr3&
 TryFinally: body, final