Create do/mu command

[johnk-]

.. to keep hostilefork happy We could add a 'template field to each of the commands in the remote-execution-url block. e.g. initial idea: use an odd char and replace it if there is a template remote-execution-url: [ rebol3 http://tryrebol.esperconsultancy.nl/do/REBOL none rebol2 http://tryrebol.esperconsultancy.nl/do/REBOL-2 none boron http://tryrebol.esperconsultancy.nl/do/Boron none red http://tryrebol.esperconsultancy.nl/do/Red none mu http://tryrebol.esperconsultancy.nl/do/REBOL {import rebmu-url?.r3 rebmu [~]} ] then do a replace/all for the ~ in the POST