0.7.12.30

0.7.12.30
Update asdf to newer upstream version (:serial t)

module-provide-asdf now refuses to try providing a module
unless it can find a system file, so doesn't usurp the whole
PROVIDE/REQUIRE mechanism for non-asdf modules.

make-target-contrib.sh should set SBCL_HOME to the source
tree, so that inter-module dependencies are searched for in
the right place

Actually add the ACL repl to the repository this time