thy reader now initialised by init_thy_reader();

--- a/ROOT.ML	Fri May 13 11:14:20 1994 +0200
+++ b/ROOT.ML	Thu May 19 17:07:19 1994 +0200
@@ -10,8 +10,7 @@
 val banner = "Higher-Order Logic";
 writeln banner;
 
-structure Readthy = ReadthyFUN (structure ThySyn = ThySyn);
-open Readthy;
+init_thy_reader();
 
 print_depth 1;  
 eta_contract := true;