BUG #14112: sorting v and w is broken with et_EE locate

The following bug has been logged on the website:

Bug reference:      14112
Logged by:          Georg Kahest
Email address:      georg.kahest@internet.ee
PostgreSQL version: 9.4.7
Operating system:   Debian Jessie
Description:

It seems that sorting v and w with et_EE locate is broken (other chars seem
to be okey):

select name COLLATE "et_EE" from test order by name;
        name
--------------------
 a1.ee
 vvbwjbln7.ee
 wwvl8.ee
 wxxezi6lkaq7eoi.ee
 vyz.ee
(5 rows)


select name COLLATE "en_US" from test order by name;
        name
--------------------
 a1.ee
 vvbwjbln7.ee
 vyz.ee
 wwvl8.ee
 wxxezi6lkaq7eoi.ee
(5 rows)