The current script does not configure tests when configureonly is
provided.
This commit revises 'build.sh' to configure tests even when configureonly
is provided.
This commit makes it possible to build tests (including related components)
via configuring the whole projects and running make inside that directory.
Commit migrated from https://github.com/dotnet/coreclr/commit/
9059610008205ac6c7c88e2a2651f61b94558ffc
__ConfigureOnly=1
__SkipMSCorLib=1
__SkipNuget=1
- __IncludeTests=
;;
skipconfigure)