hg: jdk8u/jdk8u/jdk: 8260356: (tz) Upgrade time-zone data to tzdata2021a

[gnu.andrew at redhat.com]

Changeset: d103481ecd91
Author:    andrew
Date:      2021-03-22 06:11 +0000
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/d103481ecd91

8260356: (tz) Upgrade time-zone data to tzdata2021a
Reviewed-by: dcherepanov

! make/data/tzdata/VERSION
! make/data/tzdata/africa
! make/data/tzdata/leapseconds
! test/sun/util/calendar/zi/tzdata/VERSION
! test/sun/util/calendar/zi/tzdata/africa
! test/sun/util/calendar/zi/tzdata/leapseconds