- using now Horde_Mime_Headers::parseHeaders() for headers instead of Mail_mimeDecode, which should be completly replaced with Horde_Mime_Part::parseMessage()
- replaced imap_rfc822_parse_adrlist with Horde_Mail_Rfc822::parseAddressList() using static wrapper emailadmin_imapbase::parseAddressList()
r49066: sending mail was failing after r49065