Hi,

After the previous discussion 
(http://sourceware.org/ml/gdb-patches/2013-07/msg00840.html), follows a 
patch to refactor the ill-named target-common.[c|h] files into something 
a bit more meaningful.

First, it seems like a good idea to stablish a  more meaningful 
directory structure as well, so we are moving target-common.[c|h] from 
the "common" dir to the new "target" dir. This new directory will hold 
anything more backend-related. For now it contains only generic target 
definitions and functions.

I've broken target-common.[c|h] into the following:

- target-resume.h: Definition for resume_kind.

- target-waitstatus.[c|h]: Definitions and code for anything related to 
waitstatus.

- target-wait.h: A tiny bit that does not seem to fit properly in the 
waitstatus files, so it is left here.

As usual, Makefile and other dependencies have been adjusted. Everything 
builds fine and does not show any regressions.

The copyright headers have been adjusted and cleaned up to remove 
contribution messages.

Comments over 70 columns have also been adjusted for this patch.

Thoughts?

Luis