drd: Make regression test output independent of --read-inline-info

There are plans to enable --read-inline-info=yes for all Valgrind
tools. Hence make the DRD regression test output independent of how
--read-inline-info has been set.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14478 a5019735-40e9-0310-863c-91ae7b9d1cf9