Historically the MaNGOS project has kept the three main components into separated project. The core, the scripts and the database content have been developed by separated projects, having separated teams, repositories and IRC channels.
CMaNGOS has inherited this scheme, but now things seem to be changing…
Immediately after the 0.18 release, the CMaNGOS team created a new repository cmangos/cmangos-dev where they are merging the core, the database contents and the scripts. They are placing ScriptDev2, ACID and UDB all together with the core:
This is an historical change because, as well as TrinityCore, CMaNGOS will have just one repository, one team and one forum for everything.
Surely the development process and the installation of CMaNGOS project will be simplified a lot after this change.