This patch addresses PR python/10806. It is mechanical replacement of 
the PyGILState_Ensure/Release with the more recently introduced 
ensure_python_env.

OK?

Cheers,

Phil

2009-10-21  Phil Muldoon <pmuldoon@redhat.com>

     PR python/10806

     * python/python.c (run_python_script): Use ensure_python_env over
     PyGILState_Ensure.
     (gdbpy_run_events): Likewise.
     (run_python_script): Likewise.
     (source_python_script): Likewise.
     * python/py-breakpoint.c (gdbpy_breakpoint_created): Likewise.
     (gdbpy_breakpoint_deleted): Likewise.
     * python/py-inferior.c (delete_inferior_object): Likewise.
     (add_thread_objet): Likewise.
     (delete_thread_object): Likewise.