KUser -> kdecore

[Tim Jansen]

hi..

I'de like to move the class KUser to kdecore. You can currently find it in 
kdenetwork/krfb/srvloc/ 
(http://webcvs.kde.org/cgi-bin/cvsweb.cgi/kdenetwork/krfb/srvloc/).

The class offers a object-oriented interface to the getuid(2), geteuid(2) and 
getpwnam(3) POSIX functions and is able to parse GECOS fields correctly.

It is currently used in krfb and danimo asked for it to fix GECOS-related 
problems (like the one in KCMEmail).

bye...