When deciding whether to run benchlibcallbrind, the code only tested _i386; it now tests __x86_64 as well, to match a recent change in the test itself. As there, reverse the test to reduce negations, flipping the stanzas it selects between. Also tidy up the code that tests for valgrind being present - and actually return true, to skip the test, when it claims to be skipping the test. Updated test results, now that the test can actually be run and produce sensible output. Added an _2.txt that matches the results presently seen in Coin on RHEL 8.4 (despite the fact that a local build on such a VM produces output matching the _1.txt results). Change-Id: Ibce09dca06a1eeb73e90fb1345834998683df9d8 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>