berkeley-testfloat-3: pull changes

- fail: constify fail_programName

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

berkeley-testfloat-3 @ 5a59dcec

-Subproject commit ca9fa2ba05625ba929958f163b01747e07dd39cc
+Subproject commit 5a59dcec19327396a011a17fd924aed4fec416b3