(3.17) Bug fixes related to offhand items and sentry

Fixed bug involving infinite ammo and certain offhand items (Credit: eSq)

* Small fixes of bugs with 3.10
* Minor carnage changes

Minor tweaks, fixes and restrictions (*small error in previous upload)

Minor tweaks, fixes and restrictions

* Added new mode "Cheddar" - similar to potato, but not infinite ammo, alien drop loot.
* Added "no sentry" C3+C4 mode - sentrys not allowed (can still be found on certain maps)
* Removed backback models (except for orange server.dll)

* Added new mode "Cheddar" - similar to potato, but not infinite ammo, alien drop loot.
* Added "no sentry" mode - sentrys not allowed (can still be found on certain maps)
* Removed backback models (except for orange server.dll)

* Tech buffed with fast Sentry placement
* New variables added to reduce lagg
* Grenade Sentry allowed in carnage above 2
* Revised recharge timings for some offhand items

* Minor offhand item changes
* Added some map based item spawns