Added indexing for :around-compile and related.
Merge branch 'master' of ssh://common-lisp.net/project/asdf/public_html/asdf
Tweak test-around-compile.

Be more careful to check that the test system is loaded in *both* of the
sub-tests.  Thanks to Fare for getting me through bewilderment with
a *READ-BASE* of > 10.
Fold prelude.lisp into asdf-builder, since it's the only script left to use it.
Fix bug in split-string's handling of an empty input — failed to return an empty list,
instead returned ("") or (NIL), which in turn causes getenv-pathnames to fail,
and eventually (default-source-registry) failed to properly default in absence of XDG_DATA_DIRS,
which itself breaks Debian installations. Big oops.
Introduce load-systems* as a variant of load-systems that allows for keyword arguments.
Bump version to 3.0.2.9