[PATCH] add -s option to make -break-insert support dprintf

[Eli Zaretskii]

> From: Hui Zhu <teawater@gmail.com>
> Date: Fri, 29 Mar 2013 16:01:18 +0800
> Cc: Hui Zhu <hui_zhu@mentor.com>, gdb-patches@sourceware.org, 
> 	marc.khouzam@ericsson.com
> 
> Post a new version according to your comments.

This version is OK, thanks.