GitLab

failures

Please folks, remember failing perf tests are not expected and should
always be investigated.  In particular I have no idea why T4801 is now
failing - I narrowed it down to something around 30 Sep, but can't see
any commits around that date that could have caused it and it has
jumped by more than 10%.

This means adding a few type signature, and some tests failing
(as they should) rather than succeeding

Also some expected/actual messages are now the right way round

We get a reference to memcpy@plt rather than memcpy

dynamic ghci can't load .a files

This is more efficient than having to wait for all threads to finish
before each 'alone' test.

With the exception of
    nbody      dph-nbody-copy-opt
    nbody      dph-nbody-vseg-opt
    quickhull  dph-quickhull-copy-opt
    quickhull  dph-quickhull-vseg-opt
    words      dph-words-copy-opt
    words      dph-words-vseg-opt
which are marked as 'high_memory_usage'