* Enable switching bitness of interactive host

* Improve integration test error reporting

* Update integration test

This includes the full set of net461 reference assemblies.

* Move VS specific targets to VisualStudio.targets

* Move optimization targets to RepoToolset/OptimizationData.targets

* Move SourceLink targets to RepositoryInfo.targets

* Remove workarounds for fixed issues

* Move workrounds to Workarounds.targets

* Clean up binding redirect generation properties

* Remove unused targets

* Normalize PushToBlobFeed parameters to values used by RepoToolset.

* Use System.Runtime.Loader light-up package

* Only import package versions in projects that restore toolset packages

* Add nuget.org feed

The syntax is incorrect and it's failing bash. Will try again later.

Go back to only bringing in the `XliffTasks` package in projects with
shipping binaries. It turns out some non-shipping projects use a
different set of NuGet feeds that do not include `XliffTasks`, causing
the signed build to fail when we try to restore them.

This also requires we update the loc check to go through a target
conditioned on shipping projects, since the
`EnsureAllResourcesTranslated` target will no longer be available in all
projects.

* Use Microsoft.SourceLink.GitHub 1.0.0-beta-63001-01

* Workaround XAML bug

* Fix CommitHashAttribute

* Update compiler package to 2.9.0-beta7-63018-03

* SymLink .git directory for 2nd deterministic build

Instead of adding a target to work around the fact that XliffTasks is
only present in projects with shipping binaries (and thus we can't use
the `EnsureAllResourcesTranslated` target from XliffTasks directly) make
it available in _all_ projects, but turn it off (via the
`EnableXlfLocalization` property) in the non-shipping ones.

* Orchestrated build dependency uptake

* Remove duplicate NuGetPackageRoot definition

From beta6 to beta7

1. Add a new `CheckLocStatus` target. When run this target validates that all localizable resources have been translated, and produced MSBuild errors for those that have not. This simply delegates to the `EnsureAllResourcesTranslated` in the XliffTasks package, but it conditioned to only run for projects producing shipping binaries (non-shipping projects don't pull in the XliffTasks package).
2. Update build.ps1 to include a `-checkLoc` switch. When the switch it set, build.ps1 will run the above target in MSBuild.
3. Add a check-loc-status.cmd script for use in the CI build. This executes build.ps1 with the minimum set of switches for checking the loc status. For example, we need to restore to ensure we have XliffTasks installed, but we don't need to actually run the `build` target. By skipping that we can greatly speed up the associated leg in CI builds.
4. Update netci.groovy to include a build leg that runs the check-loc-status.cmd script. Currently it will only be run on-demand via a `test loc` comment, but I can imagine turning it on for release branches to ensure loc changes don't find their way in late in the cycle.

Update XliffTasks to the latest version. Notably, this version produces
better MSBuild error messages when a .xlf file can't be loaded as XML.

This updates the resource DLL which corrects the version of mscorlib for
the net45beta resource.