[Proposal:Avalon5] Merge all Avalon 5 development into Avalon Sandbox

We have *several* CVS repositories, and a couple different locations for
"Avalon 5" stuff.  We really need one location for the new Avalon
development and discussion issues.  For that reason I propose that we
merge all the efforts into

${avalon-sandbox}/avalon5

That would remove the ${jakarta-avalon}/src/proposal/avalon5 directory,
and make it official where our efforts need to go.

An alternative to that approach is to create a new Avalon CVS, so that
we can migrate initial stuff into one CVS structure.  I envision the new
Avalon CVS structure to look like something like this:

${avalon}/
    /framework4
        /src
            /java
            /cs
            /test
            /xdocs
    /framework5
        /src
            /java
            /cs
            /test
            /xdocs
    /container (for uber-container)
        /src
            /java
            /cs
            /test
            /xdocs

Questions are what do we do with Excalibur/LogKit/Cornerstone CVS?