User can now select target RHI's for windows under: Edit->Project Preferences->Windows->Targeted RHIs
Split up GetShaderFormats into GetAllPossibleShaderFormats and GetAllTargetedShaderFormats.
D3D11 and D3D10 remain the only two on, by default, for windows.
#ReviewedBy Nick.Penwarden
[CL 2068025 by Terence Burns in Main branch]
- New target platforms (LinuxNoEditor for client+server, LinuxClient for client, Linux for editor, LinuxServer for dedicated server - mirroring other platforms).
- Preliminary support for gcc in the toolchain (and some safe fixes in code).
- No more lowercasing when accessing files on Linux, tread carefully.
- Changes needed for native compilation and other minor improvements.
#codereview Josh.Adams, Michael.Liebenow, Steve.Robbs
[CL 2067133 by Dmitry Rekman in Main branch]
- Do not add a local device unless actually running on Linux (TTP #331642)
- Use identifier as a name instead of local machine name (TTP #331801)
- Misc spelling.
[CL 2066118 by Dmitry Rekman in Main branch]
