Clearify running testsuite as part of patch submission

[David Miller]

From: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Wed, 18 Apr 2012 08:35:14 +0530

> On Tue, 17 Apr 2012 12:45:34 -0700 (PDT), Roland wrote:
>> No, 'make check' is the standard target and everyone expects that it
>> is safe to run in constrained environments.
>> 
>> What we should do first is document all the details of the xcheck
>> cases we have today.  Then we can consider the issue further.
>> 
> 
> I can put this in my TODO list.

See the reply I just made, I analyzed all of them.