* COMPILE (riece-test): Require 'lunit after when ./test is added

* COMPILE (riece-test): Require 'lunit after when ./test is added
to load-path.

* test/test-riece-yank.el (test-riece-yank-strip-space): Use
lunit-assert-2 instead of lunit-assert.

* test/test-riece-url.el (test-riece-url-replace-match): Use
lunit-assert-2 instead of lunit-assert.
(test-riece-url-regexp-alist): Ditto.

* test/test-riece-alias.el (test-riece-alias-percent-hack): Use
lunit-assert-2 instead of lunit-assert.
(test-riece-alias-alist-1): Ditto.
(test-riece-alias-alist-2): Ditto.
(test-riece-alias-altsep-1): Ditto.
(test-riece-alias-altsep-2): Ditto.
(test-riece-alias-altsep-3): Ditto.
(test-riece-alias-altsep-4): Ditto.

* test/test-riece-addon.el (test-riece-resolve-addons-1): Use
lunit-assert-2 instead of lunit-assert.
(test-riece-resolve-addons-2): Ditto.

* test/lunit.el: Don't treat a failure as an Emacs error signal;
count assertions in test-case methods.
(lunit-test-result): Add assert-count slot.
(lunit-make-test-result): Reset assert-count to 0.
(lunit-test-result-run): Count assertions; collect failures at a
time after test-case execution.
(lunit-test-result-failure): Abolished.
(lunit-test-case): Add failures and assert-count slots; define
internal accesssors for them.
(lunit-make-test-case): Reset assert-count to 0.
(lunit-test-case-run): Don't handle failure signals.
(lunit-assert): Define as a nop macro.
(lunit-assert-2): New macro.  Use this instead of lunit-assert.
(lunit): Display assertion count.