Floating prisioners in E4M1

[Knightmare66]

If you're above the prisoners in E4M1 (either on a ledge or noclipping) they will walk/float upwards toward you.

[Frank Sapone]

Setting self->gravity = 2.0 for these guys makes it stop. However, check my commit it lists possible functions that may attack the root issue. I won't mark this as resolved, unless you think my hack is good enough.

[Frank Sapone]

Issue #87 was marked as a duplicate of this issue.