Bug#1092351: libphonenumber ftbfs with icu-76.1

[Matthias Klose]

Package: src:libphonenumber
Version: 8.13.51+ds-4
Severity: important
Tags: patch
User: debian-devel at lists.debian.org
Usertags: icu76

The package fails to build with icu 76.1-2 from experimental.  The most 
likely reason is that it's not built for the default C++17 standards, 
and manually specifies an earlier standard.

The build log shows the package building with -std=c++14, and failing.

Patch at
http://launchpadlibrarian.net/769143420/libphonenumber_8.13.51+ds-4build1_8.13.51+ds-4ubuntu1.diff.gz