RFR: JDK-8142936:Additional java.time.Duration methods

[nadeesh tv]

Hi all,

Please review a fix for

Bug Id - https://bugs.openjdk.java.net/browse/JDK-8142936 
<https://bugs.openjdk.java.net/browse/JDK-8142936>

  -Enhance Duration by adding toNanosPart() , 
toMillisPart(),toSecondsPart(),toMinutesPart(),toHoursPart(),toDaysPart() methods 
.
  - Had to rename  private    BigDecimal toSeconds() ->    private 
BigDecimal toBigDecimalSeconds()


webrev - http://cr.openjdk.java.net/~ntv/8142936/webrev.01/ 
<http://cr.openjdk.java.net/%7Entv/8142936/webrev.01/>

-- 
Thanks and Regards,
Nadeesh TV