not posix.2 compliant. They use "%s: invalid option -- '%c'\n"
instead of "%s: illegal option -- %c\n", so adjust the expr.
(Reported by David Taylor <dtaylor@emc.com>.)

allocation.
(Reported by David Taylor <dtaylor@emc.com>.)

* sanity.sh (taginfo): Update to compensate.

entries.

(parse_config): Store existence of user-specified LogHistory directive
per config file rather than globally.
* parseinfo.h (struct config): Add new usingDefaultLogHistory boolean.

* edit.c (send_notifications, edit, unedit): Use CVS_LOCK_NONE instead
of 0 in calls to start_recursion to avoid compiler warnings.
* parseinfo.c: Remove duplicate definition of config (from main.c).
* hash.c (walklist): Cast function pointers to void * for tracing.
* recurse.c (start_recursion): Ditto.

  update.c, vers_ts.c: Fix gcc -Wall warnings.

* configure: Regenerated.

* test-getdate.sh (valid_timezone): Fix incorrect return values.

(expand_modules): Removed this stub function.
(get_history_log_name): Don't return const since it is freshly
allocated.
(history_write): Add version number to history records.  Use tag
fields like other record types.
(fill_hrec): Load version number & postprocess history records as
needed.  Zero records with memset.
(read_hrecs_file): Don't zero records redundantly with fill_hrec().
(report_hrecs): Find tag data in the same place as other record types.
* sanity.sh (basic2-64): Expect new tag records.
* tag.c: Some cleanup.
(cvstag): Move history log call to...
(tag_filesdoneproc): ...here, where we have more information.

* subr.h [NULL2DOT, NULL2MT]: Add parens for safety.