- Fix powerpc recent secure PLTs handling (shared library calls) (BZ
        452960).
    - Fix the testsuite .spec runner to run biarch also on ppc.
    - Reenable testcases threadcrash.exp, chng-syms.exp, checkpoint.exp (BZ
        207002).
    - Fix PRPSINFO in the core files dumped by gcore (BZ 254229), reformatted
        patch from Denys Vlasenko.
    - Fix register assignments with no GDB stack frames, Denys Vlasenko (BZ
        436037).