[CMake] EXECUTABLE_OUTPUT_PATH showing in list of cache variables

[Robert Dailey]

I'm not sure if my eyes are playing tricks on me, but after upgrading
to 2.8.9 I'm seeing EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH in
my list of cache variables now, I don't remember seeing them before.

Is this a feature? I didn't see any mention of this in the changelogs.

If this is new, why do they show up now? According to the
documentation, they seem to be deprecated since they are referred to
as "old".