* test-org.el (test-org/org-link-escape-ascii-character)
(test-org/org-link-escape-ascii-ctrl-character)
(test-org/org-link-escape-multibyte-character)
(test-org/org-link-escape-custom-table)
(test-org/org-link-escape-custom-table-merge)
(test-org/org-link-unescape-ascii-character)
(test-org/org-link-unescape-ascii-ctrl-character)
(test-org/org-link-unescape-multibyte-character)
(test-org/org-link-unescape-ascii-extended-char): New tests for
unicode aware percent escaping
All tests for escaping/unescaping multibyte characters are expected to
fail at the moment, because org-link-escape/unescape is not yet
unicode aware.
