Fix bug 74836 (IDN email addresses are not fully recognised) by allowing all non-ASCII letters as part of the domain part of an email address.
Fix bug 74836 (IDN email addresses are not fully recognised) by allowing all non-ASCII letters as part of the domain part of an email address.

svn path=/trunk/kdepim/; revision=287552

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi