Samuel,
I only have small comments.
First, the ChangeLog entry:
> 2014-09-06 Samuel Thibault
>
> Add hardware watch support to gnu-i386 platform.
>
> * gdb/gdb/gnu-nat.c (inf_threads): New function.
> * gdb/gdb/gnu-nat.h (inf_threads_ftype): New type.
> (inf_threads)
2014-09-06 Samuel Thibault
Add hardware watch support to gnu-i386 platform.
* gdb/gdb/gnu-nat.c (inf_threads): New function.
* gdb/gdb/gnu-nat.h (inf_threads_ftype): New type.
(inf_threads): New declaration.
* gdb/gdb/i386gnu-nat.c: Include "x86-nat.h" a