Fix CPack for Documents
Fix CPack for Documents

BUILD_documentation option is already deprecated.

drmateo/pcl,stefanbuettner/pcl,drmateo/pcl,ipa-rmb/pcl,stefanbuettner/pcl,ipa-rmb/pcl,drmateo/pcl,stefanbuettner/pcl,drmateo/pcl,ipa-rmb/pcl,drmateo/pcl,stefanbuettner/pcl,ipa-rmb/pcl,ipa-rmb/pcl,stefanbuettner/pcl