Move all the scons.org stuff from the scons source tree itself to a

Move all the scons.org stuff from the scons source tree itself to a
directory next to the trunk, and delete the copies from the branches.
There's a lot of stuff there (what with all of the documentation of
the different versions) and it's ridiculous to make everyone sync it
just to work on the code.

git-svn-id: http://scons.tigris.org/svn/scons/trunk@1646 fdb21ef1-2011-0410-befe-b5e4ea1792b1