- Workaround build on native ppc64 host.
    - More RHEL-5 compatibility updates.
    - Disable warning messages new for gdb-6.8+ for RHEL-5 backward
        compatibility.
    - Workaround RHEL-5 kernels for detaching SIGSTOPped processes (BZ 498595).
    - Serialize the testsuite output to keep the order for regression checks.
    - Re-enable python for all non-ppc* arches.
    - More gcc44 stack exceptions when running the testsuite on RHEL-5.
    - Fix backward compatibility with G++ 4.1 namespaces "::".
    - Fix regression on re-setting the single ppc watchpoint slot.
    - Update snapshot of FSF gdb-7.0.x branch.
    - Backport fix of dcache invalidation locking up GDB on ppc64 targets.