Switch to csc satellite assembly generation for all projects

In order to build corefx repo using .Net Core version of msbuild, we require al.exe to run in .NetCore since we need to generate satellite assemblies. Today, if you try to build a project that needs this task will fail when trying to load it. There should be a workaround for the time being to disable the task from running, and once Al.exe is converted to net core it should be re-added back.

For this, I've used the .NetCore msbuild produced by https://github.com/dsplaisted/msbuild/tree/netcore-selfbuild