Removed stale dmtcp/src/hello.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2407 ba6dc0ae-232f-0410-883f-9ebac64fc565
Added toplevel distgit target.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2408 ba6dc0ae-232f-0410-883f-9ebac64fc565