Move the network code into a separate stand-alone library

[valerio]

To create "libkmess-msn" we will need to, in order:

• separate all GUI components from the network code
• implement public lib <--> gui interface classes
• split up the network code by moving it in the /lib/ directory

The first API draft is attached as an XMI file, which you can open with Umbrello or other UML modeling apps.

The ongoing RFC and discussion is  on this topic.

[valerio]

first API draft by Diederik

[valerio]

Features like reconnection and last status reuse on reconnection will be moved entirely on the GUI side.

I'm removing them from the lib.

[valerio]

Oh, switching from TCP to HTTP connections will need to be left to the GUI discretion too.

[sjors]

Done. The library is split with rev r5510 and afterwards. We can leave this ticket open until we're done porting it completely, and have also taken into consideration the notes in this ticket.

[valerio]

Done. We've completed all separation, from the code to the build system.