copy-list before we destructively sort components.
Tweak build and package files.

Handle exit codes when running from the Lisp REPL.
Driver tweaks; notably control conditions when loading an ASDF system.

Notably, pass around the location of the xcvb-program we create in the cache.

rename *tmp-directory-pathname* to *temporary-directory*.

* Use define-command to define and register a command
* Introduce the notion of workspace to store intermediate and target files.
* Update Makefiles for new intended output paths

Fix the same bug wrt loop on CLISP, in another function.
Be more violent in resetting release dependencies directories.
Fix make-release-tarball (double oops).
Export getcwd, chdir, with-current-directory from the driver.
Tweak logging, so it works when verbosity is uninitialized.

Move more release code from Makefile to CL.
Fix shell-tokens-to-Makefile on CLISP (CLISP bug in loop, or my misreading the spec?)
Fix some tests, make them more verbose.
Driver: Fix native-namestring on SCL; fix issues on CLISP:
Setting the *source-file-types* and *compiled-file-types* to nil
was preventing (require "linux") from working(!).

Move fake-release-directory to Lisp.
Fix enough-namestring in Makefile.

Fix a few glaring recent bugs.

Therefore, a clever user might build without locking, then load with locking.
Avoid a SBCL compiler bug in main*.

c::builder'ing shared libraries.  Refactored the grain class hierarchy
a bit.

Fix list-files and export it to the command-line.
Fix version extraction in bootstrapped build.
Update documentation: document :executable. Remove ASDF1 crud.

* extract fasl type from target:
 at least lispworks depends on pathname type and its fasl type varies!
* rucksack not available on clisp (and needed fixes; see our xcvb repo of it)
* accept compile-file failure semantics of clisp
* suppress duplicate entries for a directory in the source-registry:
 The first one wins, with its recurse and exclude flags.
* fix hello and test/runme
* fix various option parsing mistakes

Also, now that we're importing symbols from ASDF,
avoid redefining them due to a conflict. Oops.

(xcvb-unit-tests::test-simple-build :implementation 'lispworks)

on user-error conditions instead of no backtrace. However, when
using the env var XCVB_DEBUGGING=t in the environment, it
somehow seems to fail.  So that needs a little more debugging...

Fix SBCL as a target: avoid the slot-boundp in match-condition-p.
Add *target-can-dump-image-p* as a target feature;
use it as pre-condition for use-base-image.

Usually we don't need a backtrace when the user simply did the wrong
thing.

Extract version from git when finalizing the image (requires cl-launch 3.009).
On CCL/windows, work around bug ccl bug 858 in run-program.
Simplify some tests for run-program, fix others.