RFR: 8228469: (tz) Upgrade time-zone data to tzdata2019b

[Ramanand Patil]

Hi all,
Please review the patch for tzdata2019b integration into jdk project(jdk-14).
Webrev: http://cr.openjdk.java.net/~rpatil/8228469/14/webrev.00/
Bug: https://bugs.openjdk.java.net/browse/JDK-8228469

Summary:
	- This patch uses "vanguard" format tzdata from IANA (instead of rearguard format), as the enhancement bug[1] is fixed now. Many thanks to Naoto for this.
	- As per the latest changes to Palestine zone rules, the hard-coded checks for "Asia/Gaza" and "Asia/Hebron" are no more needed in ZoneInfoFile.java.
	  Because of those checks test/jdk/sun/util/calendar/zi/TestZoneInfo310.java was failing as mentioned in the bug comment[3].
	- test/jdk/java/util/TimeZone/TimeZoneTest.java is updated to set ZoneDescriptor.daylight value to "false" for BET zone id.
	- The patch has passed all the related testing including JCK.

Notes:
- As per the mail from tzdata maintainers[2] there is a possibility that Brazil might not abolish DST.
- Since the enhancement bug[1] is not fixed in update releases, jdk13u will still use the rearguard format tzdata. A separate review request will be sent for the same.


[1] https://bugs.openjdk.java.net/browse/JDK-8212970
[2] https://mm.icann.org/pipermail/tz/2019-July/028344.html
[3] https://bugs.openjdk.java.net/browse/JDK-8228469?focusedCommentId=14281498&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14281498


Regards,
Ramanand.