make/data/tzdata/leapseconds

8216178: (tz) Upgrade time-zone data to tzdata2018i
Reviewed-by: duke

*** 1,28 ****
- #
- # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- #
- # This code is free software; you can redistribute it and/or modify it
- # under the terms of the GNU General Public License version 2 only, as
- # published by the Free Software Foundation.  Oracle designates this
- # particular file as subject to the "Classpath" exception as provided
- # by Oracle in the LICENSE file that accompanied this code.
- #
- # This code is distributed in the hope that it will be useful, but WITHOUT
- # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- # version 2 for more details (a copy is included in the LICENSE file that
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- # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- #
- # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- # or visit www.oracle.com if you need additional information or have any
- # questions.
- #
  # Allowance for leap seconds added to each time zone file.
  
  # This file is in the public domain.
  
  # This file is generated automatically from the data in the public-domain
--- 1,5 ----
*** 40,52 ****
  # and publishes leap second data in a copyrighted file
  # <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>.
  # See: Levine J. Coordinated Universal Time and the leap second.
  # URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995
  # <https://ieeexplore.ieee.org/document/7909995>.
  # There were no leap seconds before 1972, because the official mechanism
  # accounting for the discrepancy between atomic time and the earth's rotation
! # did not exist.
  
  # The correction (+ or -) is made at the given time, so lines
  # will typically look like:
  #       Leap    YEAR    MON     DAY     23:59:60        +       R/S
  # or
--- 17,32 ----
  # and publishes leap second data in a copyrighted file
  # <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>.
  # See: Levine J. Coordinated Universal Time and the leap second.
  # URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995
  # <https://ieeexplore.ieee.org/document/7909995>.
+ 
  # There were no leap seconds before 1972, because the official mechanism
  # accounting for the discrepancy between atomic time and the earth's rotation
! # did not exist.  The first ("1 Jan 1972") data line in leap-seconds.list
! # does not denote a leap second; it denotes the start of the current definition
! # of UTC.
  
  # The correction (+ or -) is made at the given time, so lines
  # will typically look like:
  #       Leap    YEAR    MON     DAY     23:59:60        +       R/S
  # or