gettext

41e5199f - Fix compilation error in <libintl.h> on Cygwin.

Fix compilation error in <libintl.h> on Cygwin. Reported by Michael Haubenwallner at https://savannah.gnu.org/bugs/?50595 . * gettext-runtime/intl/libgnuintl.in.h (newlocale): Hide declaration if locale_t type is not visible on Cygwin.