7z-Library Update to version 7z 9.22 (by Buggler)

git-svn-id: https://ja2svn.dyndns.org/source/ja2/trunk/GameSource/ja2_v1.13@6568 3b4a5df2-a311-0410-b5c6-a8a6f20db521
Deleted empty unused 7z folder (by Buggler)

git-svn-id: https://ja2svn.dyndns.org/source/ja2/trunk/GameSource/ja2_v1.13@6569 3b4a5df2-a311-0410-b5c6-a8a6f20db521