Additional balance tweaking to Red's hideout.

Further minor performance enhancements to the Barrens.
Re-balancing in the warehouse fight.

Improvements to two hireable NPCs:
1) Little Mary has improved shotguns
2) Mavriganis has improved armor and better healthkits

Replaced missing floor tile in Red's Hideout.

Reduced difficulty in Red's Hideout.

Further balance tweaking to Red's Hideout mission.

Fixed connection to intermission after the warehouse run.
Lowered Red's Pistol skill from 2 to 1.

Changed Red to have Heal 1 instead of Heal 2.

Forced end manual turn in Barrens combat that could cause minor command delays.

Fix for minor frame hitching in Barrens.