RFR: 8177819: DateTimeFormatterBuilder zone parsing should recognise DST [v2]

[Naoto Sato]

> This fix intends to honor the type (std/dst/generic) of parsed zone name for selecting the offset at the overlap. Corresponding CSR has also been drafted.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  Refined wording

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6527/files
  - new: https://git.openjdk.java.net/jdk/pull/6527/files/40daaa29..99ad3cad

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6527&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6527&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6527.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6527/head:pull/6527

PR: https://git.openjdk.java.net/jdk/pull/6527