On Windows, before the start of the java target, processing took ~10sec while less
than a second on linux.
Disable built-in rules to speed-up the Makefile processing.
In some cases, nuget restore isn't sufficient to restore everything, especially if project.assets.json files
are missing or were removed. So we add a call to MSBuild -t:restore to build it.
Both nuget & msbuild are required because msbuild can only restore packages in 'packages.config' from version
16.5
