[rtems-tools PATCH] rtemstoolkit: Fix shell execution

[Chris Johns]

> On 29 Aug 2023, at 6:24 pm, Frank Kühndel <frank.kuehndel at embedded-brains.de> wrote:
> 
> Hello Chris,
> 
> our continuous integration server found an issues with this patch
> ("module 'shlex' has no attribute 'join'"):

Frank, thanks for the post and the insight. I saw the build break in Joel’s build but I could not see the reason. This will help. 

I will look into this tomorrow. Sorry for the breakage. 

Chris