Several weeks ago I did some build system rationalization which subtly
broke cuttlefish. Unfortunately nothing screamed very loudly so we
didn't notice.

- Place the libraries in the correct directory
- Use libarect (static lib for this purpose) rather than libui (which
is inaccessible to sphal even though the build system will allow it)

Bug: b/141209513
Change-Id: I4e9010bfb83686a876968daab8e99df736d4b1e8
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/36451Tested-by: Chris Forbes <chrisforbes@google.com>
Presubmit-Ready: Chris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>