Paranoia 2: Savior 1.51beta - update 5 file

Update at 06/16/2019
- improved compatibility with old graphics cards, bug fixes
- fixed IronSight animation
- a few minor fixes

Update at 06/19/2019
- fixed bugs with smoke (Particles)
- caching of already compiled shaders is implemented, it should remove microfreezes completely
- a few minor fixes

Update at 06/21/2019
- binary shader cache now tracks include file modifications
- minor corrections (translucent grass, for example; water refraction)
- fixed fallback mode, it no longer causes the entire engine to crash.

Update at 06/25/2019
- A new version of lightmap support on models (the old one is no longer relevant).
- various minor corrections at the request of our dear TV viewers.

Update at 06/29/2019
- one difference with update_4. In some cases, a compiled map with lightmaps on models stops with Host_Error for a reason not clear to the user. This is precisely what corrects this situation.