Fix in-src-tree builds by making gdbserver/gnulib/ a separate library (a la libiberty, etc.), and adding ACX_CONFIGURE_DIR.

[Jan Kratochvil]

On Mon, 16 Apr 2012 19:32:04 +0200, Pedro Alves wrote:
> Follows the patch.  What do you all think?

I agree in general.  I would rename gnulib/gnulib/ to some unique names
instead, it is a mess.


Thanks,
Jan