Removed old projects and solutions.
First pass converting pipeline to Protobuild.
Setup linux support.
Support for MacOS.
The pipeline now builds as part of the framework on desktops.
Shader stuff is only included on Windows.
Added missing file for MacOS.
Fixed bad paths for NVTT dependencies.
Fixed another bad dependency path.
Whitespace change.
Merge branch 'develop' into Pipeline
Merge pull request #2331 from SickheadGames/Pipeline

Convert Content Pipeline To Protobuild