-add the NOGUI keyword to the KDE4_ADD_EXECUTABLE_CALLS()

right now this only affects OS X: without the NOGUI keyword, now application bundles should be created
I will add RPATH handling later.

kdelibs/kabc/: add a dependency of addressee.h to addressee.cpp, this works partly (i.e. it works if none of both exists, but doesn't work if addressee.cpp exists and addressee.h doesn't)

Alex