Further KDE support

[dilyn-corner]

solid has references to undefined symbols when using libudev-zero instead of udev. The issue appears when building baloo. Here is the build log.

I also expect a similar problem to appear with the programs which rely on solid; this list (and their respective build logs) includes:
kdelibs4support (here)
kio (checking)
plasma-desktop (checking)
plasma-integration (checking)
plasma-workspace (checking)

[dilyn-corner]

Hold up; this might just be a mistake on KDE's part.