- Fix crash on C++ symbol failing to be demangled (BZ 206813).
    - Fix attach to stopped process, supersede
        `gdb-6.3-attach-stop-20051011.patch'.
    - Fix TLS symbols resolving for objects with separate .debug file
        (-debuginfo).
    - Fix TLS symbols resolving for shared libraries with a relative pathname.
    - Support TLS symbols (+`errno' suggestion if no pthread is found) (BZ
        185337).