bug#11066: 24.0.94; gdb-many-windows broken for remote debugging

[Toon Claes]

Hello,

I've been using emacs for remote debugging (on ARM) for some time. But
since emacs 24 this does not work as expected.

I can `step`, `break`, `continue`, etc. with the gdb commands in the
*gud-process* buffer, without any problems. The other gud-buffers
(local, stack frames, breakpoints) are nicely updated.
But when I use the gud keybinding, like C-x C-a C-s, in the source file
buffer, those gud-buffers are not affected. When I return to the
*gud-process* buffer, and run `step` the buffers are updated again. And I
can see the gud-keybinding I've used, did actually do the step, but
without updating the gud-buffers.

When I run gdb on my local machine, all works like expected.