Fixed warning from incorrect reference of MGCB.exe.
Fixed warning.
Fixed some warnings.
Cleaned up usings.
Added header comments.
Added Lidgren to solution to fix reference.
Fixed warnings.
We now treat warnings as errors in MGCB and Pipeline projects.
Updated solution to vs2012.
Removed old unused attribute.
Removed unused parameter.
Fixed some warnings.
Treating warnings as errors in 2MGFX.
Merge pull request #2450 from SickheadGames/pipeline_ref_fix

Pipeline, MGCB, 2MGFX Cleanups