[PATCH] configure: Add RTEMS_TOOL_CHAIN_ERROR

[Chris Johns]

On 13/01/2017 00:37, Joel Sherrill wrote:
> I am OK with this and think it will give a more helpful message.

I am OK with the change however I would like the patch to wait until 
docs.rtems.org is up and a permanent link can be used for ....

>     +AC_DEFUN([RTEMS_TOOL_CHAIN_ERROR],AC_MSG_ERROR([please update your
>     tool chain via the RSB
>     (https://devel.rtems.org/wiki/Developer/Tools/RSB)]
>     <https://devel.rtems.org/wiki/Developer/Tools/RSB)]>))
>     +

Chris