Tomas Hozza authored Sep 23, 2015 and Ondřej Surý committed Mar 17, 2018

Added two new configure options:
--with-libidn2 - to enable IDN using GNU libidn2

idnkit, libidn and libidn2 support can not be used at the same time.

NOTE: libidn2 does not support punycode back to Unicode
characters, so support for this is missing.

Signed-off-by: Tomas Hozza <thozza@redhat.com>

Removed iconv, convert directly from locale to ACE

Fix libidn2 and idnkit origin appending

Make IDN options in help less different

Signed-off-by: Petr Menšík <pemensik@redhat.com>