configure: add check for libidn
Note that versions 1.24 and later of GNU/libidn are dual-licensed under GPLv2+ and LGPLv3+. As with GnuTLS or Samba client, there are 3 ways to retain LibVLC binaries under LGPLv2.1+: - link against a version of GNU/libidn from last year (or older), - do not support IDN at all, - use another IDNA back-end (e.g. Windows Vista's Normaliz.dll).
Showing with 11 additions and 0 deletions