git: openjdk/jdk15u-dev: 8255086: Update the root locale display names

[Yuri Nesterenko]

Changeset: de458f9f
Author:    Yuri Nesterenko <yan at openjdk.org>
Date:      2021-04-06 12:19:00 +0000
URL:       https://git.openjdk.java.net/jdk15u-dev/commit/de458f9f

8255086: Update the root locale display names

Backport-of: ff5f2265d20d2a462691b332eb5dfcca91a22fe4

! src/java.base/share/classes/sun/util/resources/LocaleNames.properties
! test/jdk/java/util/Locale/LocaleEnhanceTest.java
! test/jdk/java/util/Locale/LocaleTest.java
! test/jdk/sun/text/resources/LocaleData
! test/jdk/sun/text/resources/LocaleDataTest.java