5.45x39mm Mainlining and Weapon Additions

[chaosvolt]

I hope that mainlining the 5.45 ammo will be acceptable, as it's a bit odd to have that be mod-only. And odder still that Icecoon didn't add any real weapons alongside it. :V

1. Mainlined 5.45x39mm ammo.
2. Added the AK-74 and AN-94 weapons. Seriously, who adds a real-world
   ammo and then only uses it for futureguns?
3. Also added 9x18mm Makarov ammo.
4. Makarov pistol and 2 variants of Skorpion SMG. .32 ACP could use a
   little more love.

[chaosvolt]

Now to hope that it doesn't bork.

EDIT: Amazing, worked on the first commit.

[Rivet-the-Zombie]

Very nicely done!

[Rivet-the-Zombie]

It throws a debug error: duplicate ammo id '545'.

[chaosvolt]

Ack. Huh, let me see what I derped up here...

EDIT: I vaguely recall seeing this "duplicate ammo ID" error in the past when using the weapon mod.

EDIT 2: Doh. Will need to correct another thing in the weapon pack now. >.<

[chaosvolt]

Also, the only piece of mod content removed instead of mainlined was the inclusion of 5.45x39mm ammunition into the "HOME_GUNS" item group. Only a limited selection of ammunition appears on that list, whereas a far wider selection of casings are present.

EDIT: Okay, I tested a thing and it seems that I only needed to rename the ammotype, not the default ammo. Will have to undo that as that might break saves, and the tilesets that have sprites for 5.45mm ammo.

[chaosvolt]

And thank you for the merge. ^^