* Adding ppc64le arch for source build (#14631)

* Remove llvm-project from source-build as we have removed this dependency in runtime. (#14697)

* Remove llvm-project from source-build as we have removed this dependency in runtime.

* Add patch for the backport PR to get this to build for now.

* Remove unneeded copy of this patch.

* [release/7.0.1xx] Update dependencies from dotnet/sdk (#14705)

[release/7.0.1xx] Update dependencies from dotnet/sdk


 - Remove backported command-line-api patch

* Don't use the MSBuild server process for init-build.proj. (#14643)

* Don't use the MSBuild server process for init-build.proj.
This appears to fix an issue where our SdkResolver is not loaded because there are still lingering dotnet processes when we try to binplace the resolver DLL.

* Address code review feedback.

* Update patch backport comments and remove obsolete patch (#14710)

* [release/7.0.1xx] .NET Source-Build 7.0.100-rc.2 October 2022 Updates (#14728)

* Update source-build to 7.0 RC2

* Also update tarball global.json

* Don't touch root global.json in case it is managed by automation

* Add back source-build patch that is still required in this branch

Co-authored-by: Swapnali911 <Swapnali.Pawar1@ibm.com>
Co-authored-by: Chris Rummel <crummel@microsoft.com>
Co-authored-by: dotnet-maestro[bot] <42748379+dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Michael Simons <msimons@microsoft.com>
Co-authored-by: Logan Bussell <loganbussell@microsoft.com>
Co-authored-by: Jason Zhai <v-wuzhai@microsoft.com>