latest alexandria doesn't build on ECL due to non-standard LOOP

Hello.

Alexandria in the latest quicklisp has a regression comparing to quicklisp 2012-02-08.

It doesn't build on ECL because on non-standard LOOP construct (it is tolerated
by most Lisps, but not by ECL; see here: http://comments.gmane.org/gmane.lisp.ecl.general/3344). 

The compiler complains about copy-stream method in io.lisp. Build logs:
https://cl-test-grid.appspot.com/blob?key=AMIfv97xRRWJgLOa5TvS78VriRK9mQ82myVc2VvHrnzvREBQSFMWQFVdpUO0nxfxKAgdBYZN_xr956y0xt7gKmwm-qa-DBpcWhdshsqTrTxeRN_VGYWjXVpVkHxpj5XV7Dbb0nOs8zQ0plRFDzBZgH7tNcChyLBwlA

Best regards,
- Anton