- When the value of undefined symbol in PPC 32-bit binary is 0, use
        PPC-specific magic to compute the PLT slots.
    - Fix a problem with tracing stripped binary after execl on architectures
        that need PLT reinitalisation breakpoint.
    - Support tracing of 31-bit binaries with 64-bit ltrace
    - Fix handling of the case where forked child is reported before parent's
        fork event
    - Patch from Supriya Kannery implements fetching 5th and further function
        arguments on s390