KDEInstallDirs variables

[Stephen Kelly]

Hello,

You might be interested in some discussion here:

 http://thread.gmane.org/gmane.comp.programming.tools.cmake.devel/11869

In particular:

 * The 'deprecated' variables are still used by kcoreaddons. I didn't check 
other frameworks. Are other frameworks ported to the new variables? Why is 
there no run-time message to port from old to new? Is there a migration path 
or even a migration need?

 * You shouldn't use the CMAKE_ prefix for the same reason you don't prefix 
Qt classes with 'Q'. That namespace should be considered owned by cmake.

 * The file contains variables with at least prefixes CMAKE_, KF5_, and 
KDE_. Consider using KF5_ universally.

Thanks,

Steve.