[Davmail-users] DavMail 4.7.3 released

[Mickaël Guessant]

Another bugfix release, mostly from user feedback. Also improve Windows
installer to let users
choose whether they want to run DavMail automatically at logon.

Enhancement:
- Improve windows installer, make auto start at logon optional
- Update release guide with opensuse build env
- update icon cache
- Update winrun4j wrappers icon to 128x128

EWS:
- EWS: workaround for invalid cookie domain on Office365

DAV:
- DAV: merge patch from #232 Outlook-created appt does not go through.
OWA-created one does

IMAP:
- IMAP: additional fix for #626, workaround for from: header not
searchable over EWS
- IMAP: fix for #626, workaround for to: header not searchable over EWS

SMTP:
- SMTP: Merge patch 627 by Peter Chubb, server returns incorrect code on
authentication failure