use domainname in message-id if possible

Do not disclose hostname in message-id if domainname is available.
Patch from bug 3201704, to fix signed+encrypted S/MIME messages
Fix for bug 3170864, fix incorrect display of non-ASCII names of attachments
Update to RFC 5751 as per bug 3428168
Update to RFC 5751 as per bug 3428168
Merge branch 'master' of ssh://re-alpine.git.sourceforge.net/gitroot/re-alpine/re-alpine
Remove unlicensed file (see code "I usually don't really care") pico/msmem.c used in Win32 build. Ref Debian BTS 641479 and RH BZ 888204.

Signed-off-by: Joshua Daniel Franklin <joshuadfranklin@yahoo.com>
Release 2.03
Remove phone_home code (that sends usage counts to UW)

Presumably the usage counts did nothing to encourage UW to keep developing
pine. :-( Also, in any case, the address bounces...

Signed-off-by: Geoffrey Thomas <geofft@ldpreload.com>