Use KLocalizedString instead of klocale.h
Review Request #127732 - Created April 24, 2016 and submitted
The use of klocale.h seems to be the last occurrence of kdelibs4support.
Thus use KLocalizedString and don't link to KF5::KDELibs4Support.
The only reason why it cannot be fully cleaned from that yet is that it requires FindAlsa.cmake which is part of kdelibs4support.
To do that, maybe it should be considered to remove wmlib.