Install UdevQt headers in Solid

[David Rosca]

Hi,

I was working on udev device notifier in kcm_keyboard [1] and ended up
with using libudev directly.

We are using libudev in various places, either directly or through
Solid's UdevQt. But in the case of UdevQt, all projects using it have
its own copy [2]. I think it would be better if Solid installs the
udevqt headers instead.

The headers are:

src/solid/devices/backends/shared/udevqt.h
src/solid/devices/backends/shared/udevqtclient.h
src/solid/devices/backends/shared/udevqtdevice.h

Would it be a problem that the headers only gets installed on Linux?
That means the project using it would need to use it only in
Linux-specific code.

Thanks,
David

[1] https://git.reviewboard.kde.org/r/125465/
[2] http://lxr.kde.org/ident?_i=udev