[asdf-devel] Please test asdf 2.018.15

[Faré]

I'd like to release ASDF 2.019 next week. Can you test 2.018.15?

Here are the changes since 2.018:

* Portability: debugged CormanLisp support (.1)
* Usability: when a system can't be found, there's now a restart to retry
  finding a system after reinitializing the source-registry (.10).
* UI: Create and use a load-systems abstraction,
  in view of using it in a system-granular parallelizing backend. (.15)
* Feature: :around-compile now accepts lambda expressions, and also strings,
  so you can specify future wrappers that can't even be read yet. (.11, .12).
* Filesystem: recursing through logical pathnames in LispWorks (.2, .3),
  on SBCL as on CMUCL, have asdf:subdirectories follow symlinks (.8., .9)
* Internals: strcat (.5), split locate-systems from find-systems (.6)
* Configuration: modify user-configuration-directories and
  system-configuration-directories to return all valid directory names
  even when they don't exist yet so you may create them (.6), also output
  name of non-existing configuration file when opening them for writing (.7),
* Fixed bugs: buglet in maybe-add-tree (.4)
* Upgrade: unintern internals of signature changed in 2.017.12 (.13),
  have *system-definition-search-functions* not be a defparameter,
  but a defvar with a fixup (.14), clear *systems-being-defined* when
  upgrading asdf but re-find them immediately because they may be needed
  as part of a higher operation (.14).

—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
To converse at the distance of the Indes by means of sympathetic contrivances
may be as natural to future times as to us is a literary correspondence.
		— Joseph Glanvill, 1661