Merge branch 'v5-stable-install' into v7-stable-install
fix import problems
install chapter now points out install from source is not regular case
update build instructions
note importance of have dependencies in place at begin of build system creation
add new build dependencies

Thanks to Florian Riedl for an updated list.
cleanup another conversion error
Merge branch 'v7-stable' into v7-stable-install
Merge pull request #40 from rgerhards/v7-stable-install

V7 stable install doc update