Add 'ProjectCsub/subCMake/' from commit '68b4f22cd938d2eeec8df38fafd076c7b6a0eb25'

git-subtree-dir: ProjectCsub/subCMake
git-subtree-mainline: 05ba885e7820dd4db11693451d3abbb1eca51d7d
git-subtree-split: 68b4f22cd938d2eeec8df38fafd076c7b6a0eb25
Cleaning up docs.