[Bug other/65366] gdbhooks.py is incompatible with Python3

[jan.kratochvil at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65366

--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[patch] PR other/65366: Fix gdbhooks.py for GDB with Python3
https://gcc.gnu.org/ml/gcc-patches/2015-03/msg00502.html