Integrating TP-Logger with KDE

[Stefano Sanfilippo]

Since Reviewboard is not appliable to the sketch repo I'm working into, here 
is the direct web link:

http://quickgit.kde.org/?p=scratch%2Fsanfilippo%2Ftelepathy-logger-
query.git&a=summary

It's still a proof of concept (I'm studying empathy code, which, to some 
extent, is not documented) and is not working yet, but shows the general 
mechanism of the thing. Reviews and (not too harsh) criticism is welcomed.

In the template-based branch, I've put a template callback function - reducing 
of some 100 lines the code - which compiles fine, but gives linker errors. I'd 
be grateful to anyone who could point me in the right direction - the people 
on ##c++ were sporting an aggravating strictness on answering my question :( 
They required a test case I did not manage to create... quite unfriendly. I 
know it's slightly OT, but I don't really know where to seek help.

Cheers,

--SKS