PATCH: 2/6 [2nd try]: Add AVX support (Update document)

[Eli Zaretskii]

> Date: Sat, 6 Mar 2010 14:19:46 -0800
> From: "H.J. Lu" <hongjiu.lu@intel.com>
> 
> This patch updates document for AVX support.

Thanks.

> +This feature indicates that @value{GDBN} supports x86 XML target
> +description.

"supports the x86 XML target description."

> +The @samp{org.gnu.gdb.i386.avx} feature is optional. It should
                                                      ^^
Two spaces, please.

> +describe the upper 128bit of @sc{ymm} registers:

"the upper 128 bits"

Okay with those changes.