Hello Guix!

I'm in the process of switching back to StumpWM as my main window
manager, and when taking a look at the package, I realised we still
supported non-sbcl builds while upstream dropped them after version
1.0.0 [0].  So since StumpWM now only supports sbcl, I thought we should
just rename it to "stumpwm" instead of "sbcl-stumpwm", as that's
redundant.  And then we can keep the ecl-stumpwm variant, but downgraded
to 1.0.0

WDYT?

Thanks,
Pierre

[0]: http://lists.nongnu.org/archive/html/stumpwm-devel/2017-01/msg00007.html