Log Message:
-----------
Update translation updating procedure. This pertains to some changes I
made to automatically exclude translations below the 80% minimum.
Modified Files:
--------------
pgsql/src/tools:
RELEASE_CHANGES (r1.90 -> r1.91)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/tools/RELEASE_CHANGES?r1=1.90&r2=1.91)