[CMake] install TARGETS given unknown argument "EXPORT". with cmake 2.8.9

[david.hagood at gmail.com]

I've not received any responses on my question as to why the "install"
function was not accepting the "EXPORT" argument on cmake 2.8.9, as the
WIKI (http://www.cmake.org/Wiki/CMake/Tutorials/Packaging) indicates
should work.

Again: I've seen many hits on the Internet about this error, so it's not
like I am the only one with this question.

Does anybody have any suggestions on how to resolve this?