FidoNet NetMail can now be gated to an SMTP client (as before), but replies are
now successfully gated back to FTN NetMail. This uses a new more RFC-compliant
To/From address header field format, so older messages (previously gated to
an SMTP client) cannot be successfully replied-to. Tested with Microsoft
"Windows Live Mail 2012" (previously known as Outlook Express).
Test reports/results with other SMTP mail clients would be welcome.

Requires SBBSecho v2.30 or later. File attachments are not yet supported.

FidoNet netmail in the normal mail base (data/mail.*) will now be exported to
FTS-1 (*.msg) files automatically. One way in which the FTN netmail can end up
in the mail base is by using the (legacy/runemaster) Web UI. You should also
get the updated savemsg.ssjs if you're going to use this feature.
To disable this feature use the (new) '-c' option.
Normally, the exported msgs will be deleted unless the '-d' option is used in
which case the messages are just marked as "sent", so they won't be exported
again. This feature does not yet support file attachments.

This will likely lead to the SMTP server supporting the sending of FTN netmail.
Apparently we have to find a better way to encode FTN addresses within
RFC2822-compliant header fields first.

If you're using a BSO/FLO-style mailer, this feature works with the '-f' option
so the full path of an outbound netmail may be SMB->*.MSG->PKT. Direct
export to PKT is certainly possible in the future.

Incremented SBBSecho version to 2.30.

Add support for USE_DOSEMU and BUILD_JSDOCS

from everything that links with the sbbs library.

Also, use the absolute path to the 3rdp stuff to silence CMake warnings.

sbbs3 into the top-level list to avoid infinite recursion when a sub-projects
include the sbbs3 list for libsbbs.so.

Include uedit/umonitor.

CMake default is release.

switchover to CMake.

DLL linkage to sort out though.

only so far.  Next is making it work in Windows, then generic working on
all other *nix platforms.