[rfa][testsuite] Consolidade Python test functions in lib/gdb.exp.

[Eli Zaretskii]

> From: Thiago Jung Bauermann <bauerman@br.ibm.com>
> Cc: drow@false.org, tromey@redhat.com, gdb-patches@sourceware.org
> Date: Wed, 20 May 2009 16:39:00 -0300
> 
> Since the 8.3 problem already exists in today's repo, do you mind if
> I commit the patch and pledge to fix this before 7.0 is released?

No, I don't mind.  Thanks.