intl: Merge from glibc.
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2017-06-21 Florian Weimer <fweimer@redhat.com>
DCIGETTEXT: Use getcwd, asprintf to construct absolute pathname
and
2018-12-21 Florian Weimer <fweimer@redhat.com>
intl: Do not return NULL on asprintf failure in gettext [BZ #24018]
