Modify the set of tables

Modify the set of tables
constructed.  Make encoding translation tables to unify 8859.
(ucs-ucs-to-mule-8859-table, ucs-preferred-8859-set)
(ucs-latin-1-unification-table):  Deleted.
(ucs-mule-8859-to-mule-unicode, ucs-mule-8859-to-mule-unicode):
Commented out.
(ucs-8859-1-encode-table, ucs-8859-2-encode-table)
(ucs-8859-3-encode-table, ucs-8859-4-encode-table)
(ucs-8859-5-encode-table, ucs-8859-7-encode-table)
(ucs-8859-8-encode-table, ucs-8859-9-encode-table)
(ucs-8859-14-encode-table, ucs-8859-15-encode-table): New
variable.
(ucs-unify-8859): New function.
(ucs-translate-region): Deleted.
(ucs-insert): New command.