Re: Extend gdb to filter registers

[Yuan Fu]

> In any case, the proposed changeset looks very large for fixing such a
> small problem.

The fix is small — 4 deletion and 4 insertions. It is in 
gdb-source-window.patch. The big one your are referred to is the feature patch 
that allows user to store their layout to a file and later restore it. Right 
now if you want to use many-windows in gdb, the default 6-window layout is the 
only option. I also sent a window layout file that you can restore from, named 
`default-rearrange`.

To clarify, now I have collected 5 patches:

- unwind-protect.patch: bugfix
- gdb-source-window.patch: bugfix
- 0001-Add-register-filters-to-gdb-mi.patch: add register filters, so you can 
display only the ones you want
- memory.patch: allow user to use expressions as memory address in memory buffer
- store-window-new.patch: allow user to store & restore window layout.

And a window layout file `default-rearrange`.

Yuan