Suites accept non-test objects

[cgay]

If you accidentally use the name of a normal function as a test (say, because you're reworking the testworks specification suites in the IO library) there is no error at compile time and at load time you get a cryptic error:

$ _build/bin/testworks-run --load libio-test-suite.so
Loading library libio-test-suite.so
{<simple-method>: ??? (<stream-test-info>, <buffered-stream>) => ()} is not present as a key for {<object-table>: size 1047}.
Backtrace:
  invoke-debugger:internal:dylan##1 + 0x29
  default-handler:dylan:dylan##1 + 0x15
  default-last-handler:common-dylan-internals:common-dylan##0 + 0x2f5
  error:dylan:dylan##0 + 0x26
  error:dylan:dylan##1 + 0x76
  key-missing-error:internal:dylan##0 + 0x27a
  gethash:internal:dylan + 0x8d2
  find-root-components:%testworks:testworks + 0x347
  run-test-application:testworks:testworks + 0x296

to be clear, if you have something like this:

define method test-with-input-buffer ... end;
define suite foo-suite ()
  test test-with-input-buffer;
end;