Balance Patch 0.7.9.Z.10 - CW

[nikomas]

Infantry Section - Brens from 5 to 6 damage, gain option to buy Boys AT rifles by default with "Crew Shock" ability (disables vehicles weapon hardpoints for 10 seconds, no movement impaired).
Recon Infantry Section - Given standard Enfields
Sappers - PIAT's +50% projectile speed
25 Pounder - 180 to 210 range
6 Pounder ATG - Gains cloak at vet 1.
Churchill MK VI - Rework weapon priorities to make some sense (Prioritising heavy armour over inf for example)
17 Pounder ATG - Movement speed from 2.5 to 3.0.
Priest - Tighten scatter by 25%
Commandos&LT - Smoke given as vet 1 reward.
Commando support teams - Smoke given as vet 1 reward.

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SCAR OR NOT SURE HOW TO DO.

Sappers - Given ability to deploy empty emplacements for 6 Pounders/17 Pounders to garrison.
2 Inch Mortar pit - Given ability to redeploy.
Vickers MG Nest - Given ability to redeploy properly.