- Fix a regression due to PIE of reloading a changed exec file (BZ 433410).
    - Include also biarch libgcc on %{multilib_64_archs} for the testsuite.
    - Cosmetic fix of a testcase sanity breakpoint setting (part of BZ 233852).
    - New test of hiding unexpected breakpoints on intentional step commands.
    - New test of GCORE for shmid 0 shared memory mappings.
    - New test of a crash on `focus cmd', `focus prev' commands.
    - Fix a minor test race of the hardware watchpoints after the fork call.
    - Test crash on a sw watchpoint condition getting out of the scope.