Alexandria had a bug that broke its copy-file function. This busted several things, including, critically, quicklisp-slime-helper. So, for the first time, I've done a dist update way ahead of schedule for a bugfix. To get the update with the fixed version of Alexandria, use (ql:update-dist "quicklisp").
A number of other projects were updated, too. Here's a summary:
New projects: cl-llvm, defmemo, genworks-gdl, rpm.
Updated projects: alexandria, clouchdb, com.google.base, com.informatimago, gbbopen, gtk-cffi, hemlock, lisp-gflags, log4cl, metatilities-base, mime4cl, slime, spatial-trees, static-vectors, wuwei, xcvb.