gdb 6.4

[Andrew Cagney]

Per recent posts, gdb 6.3 doesn't build on systems that don't have intl/ 
unless --disable-nls is explicitly specified.

Rather than re-spin 6.3, I intend doing a short sharp 6.4.  Several 
factors contribute to this:

- GDB switched to autoconf 2.59, we need exposure
- right now is a good time to pause in the dw_op_piece work
(yes that means dw_op_piece is in 6.5)
- I think i18n can be covered in a timely fashion before the branch/release

I'll be spending the next week ensuring that the patch backlog is 
drained (I've 260 gdb-patches@ and 80 gdb@ e-mails to clear).

comments,
Andrew