Also, fix Makefile.release on a Mac.

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

* 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

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.

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.

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.

	settings known to xcvb or the individual value of a single one.
Change the default object-directory location to be
	$HOME/.cache/xcvb/common-lisp/<lisp-implementation-version>/
Added format! in driver.lisp to help with debugging and forcing output.
Debugged CMUCL support in driver.
Fixed implementation-identifier support in extract-target-properties.
Allowed Makefile in example-1 to parameterize on lisp implementation.
Refactored how option-specs are specified for command line options.
Removed dead code paths from simple-build backend that dealt with
	"xcvb.mk" and the makefile output file.
Muffled warnings when loading asdf.
Added target-asdf-version setting which you can query with show-settings.
Started DONE.rest

One key was to use
 (define-compiled-dependency :build (x) `(:build ,x))
instead of `(:compile-build ,x)
because e.g. asdf, cl-ppcre, etc., are often being fully used at compile-time
not just compiled against for use at run-time.

Also, fix ssr with require supersession and fix xcvb-farmer conditionals.

My, that what much more painful than it ought to be.

Add (but not use yet) a pure grain set implementation.

* after profiling, too much time was spent in checking directories to make.
 Using a hash-table of implicitly (or explicitly) made directories
 as well as a list of explicitly made directories.
* use asdf-dependency-grovel::normalized-component-name
 for names of components included.
* Idea: give a number to each grain, then use FMIM for mergeable sets of
 grains (if lots of reuse - use hash-consing of sets of grains?).

Give proper semantics to resolve-absolute-module-name and resolve-module-name.
Make the hello example work properly.
hello now uses the generate functionality to extract version from parent XCVB.
Have log-format do fresh-lines for you.
Make sure builds are only interned once.
Recognize that builds may be invalid because of inherited conflict.

This release doesn't work at all.

* Rename handle-lisp-dependencies to finalize-grain. Refactor generators.
* Commented out stuff in cffi-grovel-support, virtual-pathnames.
* Some INTERNALS update

* separated searched build registry from traversed grain registry.
* started a virtual-pathnames layer
* small farmer progress.

* start some test infrastructure for release
* make image mode the default in configure.mk, for the sake of CCL
* fix the forker package, bake a collection macro
* extract executable and image name from target lisp (when possible)
 in view of tthsum'ing it in the future.

Unhappily, XCVB somehow fails to run properly with it.

* makefile backend bug: make was doing the wrong thing when a.fasl depends on b.cfasl
  which depends on b.fasl. Apparently, when b.fasl was recompiled, a.fasl wasn't recompiled
  until the next run of make; we ensure it will by having a.fasl depend directly on b.fasl.
* move code around: remove style-warning when loading master as lisp.
* have master explicitly support pathname arguments
 (though princ must have done the right thing already before then).
* more moving code around: move specific commands out of main.lisp.

More documentation updates.

Also, clean up the driver.
Preliminary tthsum implementation.
Remove ";;;" from LICENSE.

Don't use asdf:run-shell-command anymore, but have a portablish
xcvb-master:run-program/process-output-stream and derivatives in xcvb-master;
so much cleaner!

Complete the non-enforcing makefile backend.
Refactor a bit the asdf backend along the way.
Debug portablish-pathname, main.

Had to do a few things by hand to compile xcvb itself with poiu:
   mkdir obj-ne ; ln -s ../../poiu/poiu.asd obj-ne/ ;
   xcvb nm --build xcvb --parallel && make -f xcvb-ne.mk

Also, lay ground for a non-enforcing build (using POIU?).

* Refactor the image selection process.
* Document this new feature.
* Make no-asdf play better with c-l-c by unregistering modules that use ASDF. Sigh.

Also, exclude circular asdf self-dependencies in converted multi-asdf systems.
Actually passed the test on a multi-system conversion. Woot!

More documentation updates.

* XCVB now compiles using XCVB by default:
  make install relies on a previously installed xcvb to be working.
  You can still compile using ASDF, with the Makefile target xcvb-using-asdf

* Also, ensure that sbcl is happy wrt SBCL_HOME

SBCL requires SBCL_HOME to be remembered so that special features like
(require :sb-posix) may be imported by some software.
CCL might similarly want CCL_DIRECTORY, which has the same treatment.
This is now supported by XCVB.

More release tweaks: allow multiple target implementations in the tarball.

Wholly untested.

Moving version to its own file (bump!).
Minor Lisp tweaks (use do-find-symbol in driver, keyword argument to read-first-file-form).