add travis dependencies

fix for issue #777 (IceGun: Segfault when freezing water, with rqBlurryLand enabled)

- Cut actions array instead of performing full copy, when it is possible - Fix use of uninitialized attack parameters struct (existed for years, and could maybe explain some weird ai behavior)

Tiny optimization

don't allow getting 2nd copy of wep you already have, prevent gaining banned weps even if set to infinite in scheme.

Actually do some actions when flood detected

Define some boundaries to detect events