UFO:Alien Invasion Code

* removed exif headers from jpgs

* use the trunk base content

* delete the base to allow to copy the trunk one

* Deleted some unchanges stuff after talk with mattn.

* Updated micro-shotgun and riot-shotgun mag texture.

* Added first draft of saboted slugs model&texture to riot shotgun. (the common problem with textures happens here as well - i'll fix that soon).
* Moved original shotgun2-files to "old" (TODO: remove them from misc_source_files).
* Updated shotgunmicro_clip.xcf with the different colors.
* Removed "shotgun2_ammo" (it's the same as microshotgun_ammo) from weapons*.ufo and replaced it with saboted slugs in equipment*.ufo.

* Added extra shell to flechett magazine (for riot- and microshotgun)
* increased the size of the models in the inventory a bit (not the shape though)
* Textures will not yet show up. I hope it fix most of these things in the beginning of next week when i'm at my other computer again.

* Made the shells in this mag green - since the only shells that seem to fit in it are the flachett ones.

* Minor changes (color) to micro-shotgun clip. Should be good enough for now.

* Updated clip-texture for micro-shotgun.