The doc installation was flattened, breaking links to howto/.
Silly cut&paste error made git-doc depend on tk8.4. Doh.
Move most of the documentation (except manuals) to git-doc.
Signed-off-by: Junio C Hamano <junkio@cox.net>
As discussed on the list, split the foreign SCM interoperability
packages and documentation from the git-core binary package.
Signed-off-by: Junio C Hamano <junkio@cox.net>