RFR:JDK-8066806:java.time.format.DateTimeFormatter cannot parse an offset with single digit hour

[nadeesh tv]

Hi all,

Please review

BugId : https://bugs.openjdk.java.net/browse/JDK-8066806

Issue: java.time.format.DateTimeFormatter cannot parse an offset with 
single digit hour

webrev:  http://cr.openjdk.java.net/~ntv/8066806/webrev.03/

Solution: Added the suggested patterns but the parsing logic became too 
complex.
  Appreciate any suggestion to make the  parsing less complicated

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Thanks and Regards,
Nadeesh TV