wenzelm [Wed, 26 Nov 1997 16:37:17 +0100] rev 4286
added foldl_atyps: ('a * typ -> 'a) -> 'a * typ -> 'a;
added foldl_aterms: ('a * term -> 'a) -> 'a * term -> 'a;
added foldl_types: ('a * typ -> 'a) -> 'a * term -> 'a;
Added read_def_cterms for simultaneous reading/typing of terms under
defaults.
Redefined read_def_cterm in in terms of read_def_cterms.
Deleted obsolete read_cterms.
Cleaned up def of read_insts, which is not much shorter but much clearere are
correcter now.