7dtd WD outside of game directory

[Christian Illy]

Check if 7dtd can be run with WD outside of game directory so that different physical locations are used for logs, saves, etc.

[alloc]

In 9:

Fix #1, #2, #3, #5; Refs #4, #6: WD works for save path, not for some logs

[Christian Illy]

Not required anymore, save and log path can be specified.