Various bug fix and improvements

Task #320753: AiM-7 Bug
Task #322790: Mission failed to reload
Task #327454: Improve overall performance and reduce memory usage.
Task #327489: key instructions
Feature #296416: Improve flight physics
Feature #327466: New beeping sound
Bug #320751: Jettison Sometimes Bugged
Bug #322791: A4 obsv animation wrong
Bug #325264: speedbrake jam
Bug #326541: oh-6 outside view too rigid
Bug #326695: Buildings (hangars, scenery, etc) all missing at Nakhon on kindle
Bug #327157: Increase night light
Bug #327158: Easier flight physics
Various bug fixes and improvements
New sky and cloud
Improve flight physics
New multiplayer mode
New AI code

Day and night operations
New aircraft physics
New missile physics
Various bug fixes and improvements

New terrain graphics
New F-4D cockpit and model
New Instant Dogfight multiplayer game mode
Various glitch and bug fixes
Various improvements
Improve airplane 3d models
Pilot profile
Pilot GLOC

Fix game re-spawn issue
Fix room listing issue
Reduce NVA SAM
Display game version
Reduce SAM effectiveness

Various bug fix and improvements

* Long range F-4D
* SAMs for US and VN
* Fix jettison button problem
* Realistic fuel consumption for helicopters and jets
* Optimize, reduce lags and crashes.

Minor bug fixes
Improve water rendering
Minor gameplay improvements

Fix throttle should not higher than 100%
Fix ejection seat delay too long
Fix rudder sensitivity crash => limit sensitivity settings
Add new LZ closer to north VN (Helicopter Carrier, Rolling Thunder)
Improve overall game performance

Radar block by terrain
camera follow downed pilot
free version could choose LZ
Map joystick ejection
Disable auto eject
fix obsv missile lock
Recalibrate cannon
Volume up huey and cayuse gun
Change BG music
Jettison button
Bore sight radar mode for F4
Double phantom visual range
Spectator mode

PvP support
Realistic dry and wet engine thrust
B-52 gunner and drop bombs
Vinh NVA airbase
Fix GUI shows up when startup
New water render
More realistic plane physics
Improve realism on fuel consumption
Optimize bullet physics
Various bug fixes

New cannon sounds
Cannon recoil effects
Slightly improve graphics
Various improvements
Various bug fixes
Private multiplayer
Add refresh button room list

* Change ejection keys to ALT left/right
* Louder engine sound effects
* Other minor improvements

* Take off at all locations
* New engine sound effects
* New missile hit sounds
* New heli physics
* Ejection seat for planes
* Rescue pilot task for helis
* New mission brief texts
* Improve gunner accuracy
* Various bug fixes & improvements

* New terrain with water
* Fuel simulation/drop tank
* Game mode train/easy/real
* Input settings
* New missions, campaign
* New targets
* Multiplayer with chat
* Improve heli physics
* Various bug fixes and improvements