/usr/src/glibc/debian/patches/localedata/ is in eglibc-source 2.19-0ubuntu6.
This file is owned by root:root, with mode 0o755.
..
/usr/src/glibc/debian/patches/localedata/first_weekday.diff
/usr/src/glibc/debian/patches/localedata/fix-lang.diff
/usr/src/glibc/debian/patches/localedata/fo_FO-date_fmt.diff
/usr/src/glibc/debian/patches/localedata/fr_CA-first_weekday.diff
/usr/src/glibc/debian/patches/localedata/fr_CH-first_weekday.diff
/usr/src/glibc/debian/patches/localedata/local-all-no-archive.diff
/usr/src/glibc/debian/patches/localedata/locale-C.diff
/usr/src/glibc/debian/patches/localedata/locale-csb_PL.diff
/usr/src/glibc/debian/patches/localedata/locale-de_LI.diff
/usr/src/glibc/debian/patches/localedata/locale-en_DK.diff
/usr/src/glibc/debian/patches/localedata/locale-eo_EO.diff
/usr/src/glibc/debian/patches/localedata/locale-eu_FR.diff
/usr/src/glibc/debian/patches/localedata/locale-hsb_DE.diff
/usr/src/glibc/debian/patches/localedata/locale-ku_TR.diff
/usr/src/glibc/debian/patches/localedata/locale-nb_NO.diff
/usr/src/glibc/debian/patches/localedata/locale-se_NO.diff
/usr/src/glibc/debian/patches/localedata/locale-tt_RU.diff
/usr/src/glibc/debian/patches/localedata/locale-zh_TW.diff
/usr/src/glibc/debian/patches/localedata/locales-fr.diff
/usr/src/glibc/debian/patches/localedata/locales_CH.diff
/usr/src/glibc/debian/patches/localedata/new-valencian-locale.diff
/usr/src/glibc/debian/patches/localedata/sort-UTF8-first.diff
/usr/src/glibc/debian/patches/localedata/submitted-bz9725-locale-sv_SE.diff
/usr/src/glibc/debian/patches/localedata/submitted-en_AU-date_fmt.diff
/usr/src/glibc/debian/patches/localedata/submitted-es_MX-decimal_point.diff
/usr/src/glibc/debian/patches/localedata/submitted-locale-bo.diff
/usr/src/glibc/debian/patches/localedata/supported.diff
/usr/src/glibc/debian/patches/localedata/tailor-iso14651_t1-common.diff
/usr/src/glibc/debian/patches/localedata/tailor-iso14651_t1.diff
/usr/src/glibc/debian/patches/localedata/tl_PH-yesexpr.diff