Fix for EEMBC build problems

[Michael Hope]

The EEMBC supplied build system has a couple of bugs with library
order (putting -lrt at the start of the command line instead of the
end) and the harness library (depending on THOBJS but linking against
THLIB).  I've fixed these and pushed to our private branch.

Ulrich, I've spawned builds of your vld1.64 branch and its ancestor.
Once those are done I'll spawn a benchmark run against them.

-- Michael