test euc-kr decoding for attachment names
Bug 867909 - [email/IMAP] attachment filenames encoded using rfc 2231 character set encodings instead of mime-words are not decoded.
Merge pull request #196 from asutherland/test-euc-kr

Bug 867909 - [email/IMAP] attachment filenames encoded using rfc 2231 character set encodings instead of mime-words are not decoded. r=squib