Add constants from DWARF 4 working draft 3.
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 6c45b9d..8e580e2 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,12 @@
+2009-07-16 Roland McGrath <roland@redhat.com>
+
+ * dwarf.h: Add DW_OP_{implicit,stack}_value from DWARF 4 draft.
+ Also DW_TAG_type_unit and DW_TAG_rvalue_reference_type.
+ Also DW_AT_signature, DW_AT_main_subprogram, DW_AT_data_bit_offset,
+ and DW_AT_const_expr.
+ Also DW_FORM_sec_offset, DW_FORM_exprloc, DW_FORM_flag_present,
+ and DW_FORM_ref_sig8.
+
2009-07-15 Roland McGrath <roland@redhat.com>
* dwarf_getlocation.c: Grok DW_OP_form_tls_address,