Changes by: Xin Yu (xiny at cs.caltech.edu)
Date: 2005-02-15 02:38:30 -0800 (Tue, 15 Feb 2005)
Revision: 6675
Log message:

      Added some rewrites in itt_synt_subst; on the way to prove "subst_commute".
      

Changes	Path
+1 -0	metaprl/theories/itt/itt_int_ext.ml
+1 -0	metaprl/theories/itt/itt_int_ext.mli
+4 -0	metaprl/theories/itt/itt_list2.ml
+20 -1	metaprl/theories/itt/itt_synt_subst.ml
+1 -0	metaprl/theories/itt/itt_synt_subst.mli
+1612 -533	metaprl/theories/itt/itt_synt_subst.prla