Update to 3.3.69
    
    - New upstream release 3.3.69
      - Added missing EXTLOAD_CFLAGS declarations in configure.ac for FSDB
        detection when only .a files are present (necessary for Ubuntu)
      - Fixed valgrind warning in fst.c for dead memory allocation
      - Fixed signed fixed point binary number shift for negative numbers
      - Added ghw patch for missing enum crash in ghw files