tools: use print function in Python 3 code
    
    This GDB script was converted to use Python 3 along with all other
    Python scripts in commit b95f5528cc, but still used the Python 2 print
    statement syntax instead of the Python 3 print function. Fix that.
    
    We also add the Python 2 compatibility statement, just in case some GDB
    still uses Python 2 instead of Python 3.
    
    patch_name: 0094-tools-use-print-function-in-Python-3-code.patch
    present_in_specfile: true
    location_in_specfile: 94
    squash_commits: true