Separating kwalletd from kded

[Michael Leupold]

Hi,

in a short while I will do a commit separating the kwallet daemon from kded by 
making it standalone. This was deemed neccessary as after the migration to 
DBus kpasswdserver and kwalletd couldn't communicate any longer because they 
both lived in kded (leading to http://bugs.kde.org/show_bug.cgi?id=155994).

I tried to be careful not to cause any regression but in case you find any, 
feel free to bug me.

Many thanks to thiago for giving me hints as to why it didn't work and to 
dfaure for helping me (a lot) figure out how to implement the stand-alone 
kwalletd correctly.

Regards,
Michael