Update 17: Rocket update and improvements

• RPG-2, RPG-7, M72 LAW, SA-7 and aircraft rockets (Hydra 70) and air to air missiles: Rocket motor visual effects updated.

• SA-7 (anti air missile MANPADS for VC/NVA) now works for player.

• SA-7 model + UI updated and buzzer sound added when a target is locked.

• NVA SA-7 soldiers will now drop SA-7 when killed.

• Air to air missiles should now be fired against Mi8, and Mi8 are more rare now.

• Air to air missile kills by player should now give XP.

• M67 Recoilless Rifle aiming has been improved for the player.

• Hydra70 rocket model updated.

• Player walk speed reduced a bit more.

• Player prone speed increased.

• Player swimming updated.

• Dog anti-gravity reduced.

Thank you beta testers!