Bug#640522: Acknowledgement (libkwwidgets1-dev: transitive linking and LINK_INTERFACE_LIBRARIES)

[Mathieu Malaterre]

Typical error are:

make[3]: *** No rule to make target `/usr/lib/libGL.so', needed by
`VolViewPlatformComplete/bin/libKWWidgetsPro.so'.  Stop.

Same goes for libnsl.so, libutil.so, libm.so ...