It appears a little redundant but this follows the convention of the
other private stdlib library targets, where "SwiftReflectionTest" is
the module name, so it should be included in the target name.
This is a small helper library to communicate information back to
swift-reflection-test from a test swift executable. Each swift test
file under test/Reflection should link this library to get the main
test hook to send responses back to the test tool.