minor portability patches

[Doug Evans]

On Tue, Sep 21, 2010 at 11:24 AM, Tom Tromey <tromey@redhat.com> wrote:
> Peter> When we build --with-python, IRIX 6.5 needed -lpthread, I don't know if
> Peter> this is the correct place to add that though.
>
> Me neither.  I'm not sure how we handle static linking against python,
> or whether we even support it.

For reference sake,
I've statically linked in python just fine.
There may be something special about the python installation I used,
but I just use gdb's python-config.py normally and it DTRT.