Version 6.3 of UTS #46, Unicode IDNA Compatibility Processing

Unicode Technical Standard #46 version 6.3 has been released, synchronized with Unicode 6.3. The data tables are identical with the previous version, with the exception of the 5 new Bidi_Control characters. The table derivation has been modified to forbid Bidi_Control characters, now and in the future: this is consistent with the intent of IDNA2003, and with the treatment of these characters in IDNA2008.