Team Fortress 2 changes

Ported a Linux thread scheduling change over to Windows for a performance benefit and reduction in CPU usage
Changed sentry gun firing speeds to be their de facto base values now that firing speed has been fixed
- Wrangler: Mini: 200%, Level 1: 166%, Level 2 & 3: 150% (these are all de facto from a base firing speed)
- Mini Sentry: 125% (de facto speed, was coded to be 133% in live)
Added a decay to firing speed boosts for the sentry gun (MvM firing speed upgrade, Crit Canteen Boost, Wrangler)
- This should make firing speed boosts for sentries in MvM more balanced and within the realm of DPS values in the live game
- This is because sentry DPS had a hard cap before, due to incorrect firing speed calculations and technical limitations. Now that all firing speed boosts are correct and are unbounded by technical limits, they needed to stack in a better way to retain their functionality while still being balanced in combination with each other without a DPS cap as a result of a technical limitation.
- Each firing speed boost stack above 1 adds a decay of 94.5%
These Sentry Gun changes result in the following base bullet DPS in MvM:
- 3 firing speed + Wrangler = 240 DPS (in live 356 DPS)
- 3 firing speed + Crit Canteen = 320 DPS (in live 356 DPS)
- 3 firing speed + Wrangler + Crit Canteen = 536 DPS (in live 356 DPS)

Team Comtress 2 fixes

Fixed a dead lock in threading code which was causing freezes/crashes, especially at high framerates
Fixed a few cases where not firing for a while would cause a single burst shot once you did fire
Fixed a bug where an idle Sentry Gun (wrangled or otherwise) would accumulate fire time, causing the first bullet fired after idling with the Wrangler to deal massive damage