Make default-directory a root pathname, remove it from source-registry.
Have it use lisp-implementation-directory.
Remove any attempt to use the "current directory".
Users who want that can still try to
	(pushnew '*default-pathname-defaults* asdf:*central-registry*)

Rename tmp/ to build/ and move asdf.lisp there. Update asdf.asd.
Rename implementation.lisp to compatibility.lisp.
Move *asdf-verbose* and asdf-message to upgrade.lisp

Avoids interspersed error output in CCL, or backtrace to terminal in SBCL.

New pathname functions to work around more logical-pathname issues.
See discussion with rpgoldman on asdf-devel, and see CCL ticket:953.
Also, tweak build to reflect recent refactoring of asdf.
WIP of define-package work needed for clean upgrade (still broken).

Add its forgotten source file test/lambda.lisp. Oops.
Skip one of its tests that mysteriously breaks on ECL_bytecodes.

Bug identified by avodonosov.

Also, fix make-pathname* to make CLISP happy.
Uniformly use "backward-compat*" in comments.
Rename operation-forced{,-not}-p to action-forced-p.
Shuffle some functions around.
Refactor operate into an :around and a regular method.

Remove debugging code from previous commit.

Be more selective in what warnings get quashed when upgrading ASDF.
Skip bundle test on ABCL, ECL-bytecodes.
Sleep more in test1.

where it ought to always have been, based on a properly cleaned up prepare-op
(previously introduced in 2.26.14 as parent-load-op).

This is a checkpoint of a mostly working system after major changes;
it requires further cleanup and fixes:
strangely, fails some tests on CCL but not SBCL.

Introduce find-operation as a companion to find-component,
subsuming make-sub-operation.
The results of component-depends-on are processed with find-operation and resolve-component-spec.
component-self-dependencies is fixed to play well with prepare-op.

Also, some internal renamings and signature changes:
parent-operation becomes upward-operation
parent-load-op becomes prepare-op
parent-source-load op becomes prepare-source-op
parent-component is distinguished from module
module-components becomes component-children
module-components-by-name becomes component-children-by-name
compute-module-components-by-name becomes compute-children-by-name
circular-dependency-components becomes circular-dependency-actions
component-load-dependencies becomes component-sibling-dependencies (with a stub)
introducing child-component, downward-operation.
refactoring visit-dependencies to include the loop in which it's always used.
refactoring force and force-not processing to use a function action-override-p;
force is achieved with a trivial method on operation-done-p for prepare-op,
and force-not as a trivial check in visit-action.

Tweak tests along the way. Tweak the documentation.

Failed to either rename operation-error or introduce action-error in its superclasses:
that breaks sb-grovel.

2.26.14: Play nicer with timestamp propagation by interning dependency to parent's outer dependencies
as something explicit.

* Get rid of *stamp*, use lexical scoping everywhere
* Better handle non-filesystem actions in compute-action-stamp
* Have a simpler mechanism for backward compatibility with operation-done-p
* Have a more robust make-sub-operation, and use it where appropriate
* Test twiddling.

This fixes the major issue whereby asdf's operation-done-p was failing to check
the timestamps of dependencies, only checking those of the immediate operation.
	https://bugs.launchpad.net/asdf/+bug/1087609

This rewrite is also a vast simplification:
* we rely purely on filesystem timestamps of files
* we stop using get-universal-time and therefore eschew clock skews issues
 between processor and filesystem
* we do away with the ugly do-first dependencies, previously made necessary
 by the way get-universal-time messed with load timestamps.
* we simplify the protocol to visit components, with a better internal API
 that we use twice: once, recursively, in traverse, and once, shallowly,
 in compute-action-stamp (the new internals for operation-done-p).
* make-sub-operation is drastically simplified.

For the sake of backward-compatibility, the code style had to be contrived,
notably introducing a special variable *stamp*,
supporting dual modes for operation-done-p, and
keeping the old names of many functions that would better be renamed.

Don't upgrade ccl or cmucl on older asdf's due to incompatibilities.
Shouldn't matter since they already ship with more recent versions of asdf.

following discussion with Nikodemus on asdf-devel.
Also, improve the way we test for upgrade.
Disable upgrade test on cmucl from asdf 2.00*.
Restore -i.bak flag in bump-version: it's actually needed.

The issue fixed is that most Lisps don't like
*default-pathname-defaults* being a logical-pathname.
Added a test for logical-pathname functionality;
it all works on CCL, and works better on other Lisps after the fix,
but there are still logical-pathname issues on SBCL, CLISP and more.
Also, a package cleanup of our test suite.

test/script-support.lisp: cl-user::native-namestring already defined in SBCL (imported from sb-ext); don't try to redefine it.

Also, update testing infrastructure to work with latest xcl from git.

Also, use coerce-pathname in asdf-ecl and deprecate merge-component-name-type.

Enable extra debugging while testing (except on allegro personal where it blows up the heap)

Fix link in webpage (lp#614806).
Include SCL and ABCL in my testing routine.

Add tests for configuration files.
Also export enable-asdf-binary-locations-compatibility.

* Fix initialize-output-translations to actually use the environment,
 map output destinations to themselves, and
 actually take a parameter as documented.
* Document same parameter for initialize-source-registry, which did take it.
* Tweak symbols between unintern and fmakunbound
 to make upgrade better on both current SBCL and ECL.
* Tweak run-tests to allow for parametrizable binaries,
 to redirect output to tmp/fasls, to output Lisp command being executed,

Fix ECL compilation workaround.