%expext was not functioning at all.

* src/conflicts.c (expected_conflicts): Set to -1.
(conflict_report): Use ngettext.
(conflicts_print): Check %expect and make its violation an error.
* doc/bison.texinfo (Expect Decl): Adjust.
* configure.in (AM_GNU_GETTEXT): Ask for ngettext.
* tests/regression.at (%expect not enough, %expect right)
(%expect too much): New.

NEWS

@@ -3,6 +3,21 @@ Bison News
 
 Changes in version 1.30b:
 
+* Fixed parser memory leaks.
+  When the generated parser was using malloc to extend its stacks, the
+  previous allocations were not freed.
+
+* Fixed verbose output file.
+  Some newlines were missing.
+  Some conflicts in state descriptions were missing.
+
+* Fixed conflict report.
+  Option -v was needed to get the result.
+
+* %expect
+  Was not used.
+  Mismatches are errors, not warnings.
+
 * Fixed incorrect processing of some invalid input.
 
 * Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.