added gnutar-sparse.diff and gnutar-debug.diff
added amindexd.diff and sambauser.diff
recover-tar.diff, selfcheck.diff and port-abort.diff
remove clitar.diff
prevent arithmetic exceptions in planner
Added txtdb2.diff and execenv.diff
added txtdb.diff
added a lot of patches for amanda-2.4.0b4
clean up patches for amanda-2.4.0b3; prepare for 2.4.0b4
update version number