Log Message:
-----------
Update pgcvslog comment on how to find branch start time.
Run autoconf/autoheader in case someone forgot in the past.
Modified Files:
--------------
pgsql/src/tools:
pgcvslog (r1.22 -> r1.23)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/pgcvslog.diff?r1=1.22&r2=1.23)