This commit adds KWSys configuration option KWSYS_INSTALL_DOC_DIR to specify the directory for installation of documentation. We use it to put the KWSys Copyright.txt file at the location ${KWSYS_INSTALL_DOC_DIR}/${KWSYS_NAMESPACE}/Copyright.txt in the project installation tree. This helps containing projects meet the license requirement to distribute the copyright and license with binary forms.
KWSys provides a platform-independent API to many common system features that are implemented differently on every platform. This library is intended to be shared among many projects, so it has a configurable namespace. Each project should configure KWSys to use a namespace unique to itself. See comments in CMakeLists.txt for details. You are probably reading this file in the source tree of a surrounding project. In that case, see "../README.kwsys" for details of using KWSys in your project.