Bug#875904: [patch] fix ftbfs with glibc-2.26

[Matthias Klose]

Package: src:hhvm
Version: 3.21.0+dfsg-1
Tags: patch sid buster
Severity: important

fix ftbfs with glibc-2.26, xlocale.h not shipped anymore.

patch at
http://launchpadlibrarian.net/337129266/hhvm_3.21.0+dfsg-1_3.21.0+dfsg-1ubuntu1.diff.gz