At the moment, we could say that plasma is co-installable by chance,
it's only working because KF5 dropped the apps relative directory.
This change introduces a PLASMA_RELATIVE_DATA_INSTALL_DIR that will
be available to know where in share the components are and
PLASMA_DATA_INSTALL_DIR to know where data has to be installed to.
Reviewed by David Edmundson
CCMAIL: plasma-devel@kde.org
They do the same on Unix, but on Windows ConfigLocation is erroneously
pointing to an app-specific directory. Fixed in qtbase 44d48862c0 by
adding GenericConfigLocation for this purpose. Available in Qt 5.2.0 rc1.