hg: jdk-updates/jdk11u-dev: 8227391: Update double-conversion to version 3.1.5

[sgehwolf at redhat.com]

Changeset: 9abd792021da
Author:    hannesw
Date:      2019-07-11 17:11 +0200
URL:       https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/9abd792021da

8227391: Update double-conversion to version 3.1.5
Reviewed-by: attila

! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/doubleconv/Bignum.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/doubleconv/FixedDtoa.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/doubleconv/IeeeDouble.java
! test/nashorn/src/jdk/nashorn/internal/runtime/doubleconv/test/BignumDtoaTest.java
! test/nashorn/src/jdk/nashorn/internal/runtime/doubleconv/test/FixedDtoaTest.java
! test/nashorn/src/jdk/nashorn/internal/runtime/doubleconv/test/IeeeDoubleTest.java