distribute sphinx Makefiles as package data
Distribute these Makefiles in share/swh-docs and move the glossary.rst in share/swh-docs/docs/devel to keep the directory hierarchy of the source repo.
Staging instance, all changes can be removed at any time
Distribute these Makefiles in share/swh-docs and move the glossary.rst in share/swh-docs/docs/devel to keep the directory hierarchy of the source repo.