Optics Update 2014-02-01

tb_acc_optics: Refined external models for C79 & M145.
Refined reticle for C79,
CompM4 dot position corrected for in viewPilot LOD.
M16A4/Mk21 Update 2014-02-01

Added weight to weapons.
LMG: Minimi, Mk23, Mk24 update 2014-02-01

7.62mm Tracers corrected to 1in4 with 4 at end of belt
M1014 update 2014-02-01

Sounds adjusted.