This enables running tests and applications directly against the driver
without the use of a loader.

Bug: b/148240133
Change-Id: I7c906ed72a6bd5465a50381d3e91e18383bb23e1
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/28370
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>