[fpc-pascal]Synapse for FPC

[Marco van de Voort]

> Today I release new version of my 'Ararat Synapse'. (rel. 32)
> 
> What it is?
> 'Ararat Synapse' is TCP/IP library for Delphi, C++Builder and Kylix.
> Now it is for FreePascal too! It can be used for Wn32 systems and for
> Linux systems too.
> 
> Synapse is set of non-visual classes and procedures for TCP/IP
> programming. (IPv4 and IPv6 protocols is supported).
> 
> Additionally you can use my implementations of SMTP, POP3, IMAP4,
> SNMP, NTP, SNTP, DNS, Syslog, FTP, TFTP, HTTP or LDAP protocols. You
> can also use my MIME encoding and decoding engine, you can use my
> charset transcoding engine... and lot of more stuffs. ;-)
> 
> For more informations look to 'Ararat Synapse' web.

I looked at the unit (mainly the synsock unit), and I see a Delphi project
patched for Kylix, which is patched for FPC/Linux.

If you want to make it more generic (I think Solaris/*BSD/MacOSX should be
possible long term), you need to clean up some things:

- Make a global include file, that stores things like FPC mode, and 
	all the defines set in each unit.
- Move OS dependant things for a unit as synsock to include files or units.
- Separate everything under $IFDEF LINUX in real Linux stuff (like kernel
	structures, glibc base and derived types), and "unix" generic stuff.
- Try to get as many of these structures etc from generic units as Linux/Unix
      sockets etc.