An IMAPS-FOLDER enforces an SSL connection regardless of what port you use

(As reported and fixed by Fred Gibson)

Reported and fixed by Kevin Raison

* Introduce openmcl-fixes file where the #_ reader conditional
  can get used safely
* Remove some :unix features from files.lisp - this should work
  in LW windows too
* Add :openmcl feature in files.lisp where needed
* Add openmcl specific gray-streams package conditional
  openmcl no longer has the feature :mcl!
* bump the version to 0.7.0

Mel-base did not close the connection stream to the pop3 server after issuing a quit command. John DeSoi reported this bug and provided the fix in this patch.

Fix smtp initial response handling (reported by John DeSoi) (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-24)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-24
Keywords: 

I just read a single line as initial response of the server.
John DeSoi suggested to use read-smtp-response to read multiline
greetings successfully.

Initialize Maildir-folder selected-messages as nil (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-19)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-19
Keywords: 

Parts of the code accesses this slot without
testing if its bound. So provide a valid initform

Fix delete-message-using-folder for POP3 (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-18)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-18
Keywords: 

The folder parameter to send-pop3-command was missing.

Change with-open-file to with-open-stream for copy-folder from IMAP (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-17)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-17
Keywords: 

Instead of WITH-OPEN-STREAM I typed WITH-OPEN-FILE which is of course just nonsense.

js@codeartist.org--2004-public/mel-base--dev--0.5--patch-16
Keywords: 

Message-Caching lead to multiple hook calls

js@codeartist.org--2004-public/mel-base--dev--0.5--patch-13
Keywords: 

COPY-FOLDER from IMAP to non-IMAP did not
close the storage-stream. Therefore when
using a Maildir-Folder the messages did not get
delivered completely. They were just left in tmp.

Mailbox Folder initialization protocol using INITIALIZE-INSTANCE (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-6)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-6
Keywords: 

Changed the initialization of mailbox folder to use INITIALIZE-INSTANCE.
This way it is possible to make proper subclasses of mailbox-folder.

Wrong *imap-read-case* in non-continuation responses (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-1)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-1
Keywords: 

In READ-RESPONSE the case of atoms is preserved by setting
*imap-read-case* to :preserve and to :upcase otherwise.
:upcase returns an upcased string but atoms should be
keywords in non-continuation responses.