[1/2] docbook-xml-dtd4: clean up LICENSE situation

Don't use the common 'OASIS' license, as this isn't a SPDX license and
is in fact specifically the DocBook XML v4 license text.

Instead, use NO_GENERIC_LICENSE to ship a custom license file. We still
need to ship a copy of it in-tree because the license code needs a bare
copy of the license text.  Reference the in-tree license text in the
license checksum to show that we've verified they match.

Also, clean up some comments.

Thanks to hongxu.jia@eng.windriver.com for a previous iteration of this.

Signed-off-by: Ross Burton <ross.burton@arm.com>
---
 .../docbook-xml-dtd4/LICENSE-OASIS            |  4 ---
 .../docbook-xml/docbook-xml-dtd4_4.5.bb       | 25 ++++---------------
 2 files changed, 5 insertions(+), 24 deletions(-)

Thank you for your submission. Patchtest identified one
or more issues with the patch. Please see the log below for
more information:

---
Testing patch /home/patchtest/share/mboxes/1-2-docbook-xml-dtd4-clean-up-LICENSE-situation.patch

FAIL: test lic files chksum modified not mentioned: LIC_FILES_CHKSUM changed without "License-Update:" tag and description in commit message (test_metadata.TestMetadata.test_lic_files_chksum_modified_not_mentioned)

PASS: pretest src uri left files (test_metadata.TestMetadata.pretest_src_uri_left_files)
PASS: test CVE check ignore (test_metadata.TestMetadata.test_cve_check_ignore)
PASS: test Signed-off-by presence (test_mbox.TestMbox.test_signed_off_by_presence)
PASS: test author valid (test_mbox.TestMbox.test_author_valid)
PASS: test commit message presence (test_mbox.TestMbox.test_commit_message_presence)
PASS: test commit message user tags (test_mbox.TestMbox.test_commit_message_user_tags)
PASS: test max line length (test_metadata.TestMetadata.test_max_line_length)
PASS: test mbox format (test_mbox.TestMbox.test_mbox_format)
PASS: test non-AUH upgrade (test_mbox.TestMbox.test_non_auh_upgrade)
PASS: test shortlog format (test_mbox.TestMbox.test_shortlog_format)
PASS: test shortlog length (test_mbox.TestMbox.test_shortlog_length)
PASS: test src uri left files (test_metadata.TestMetadata.test_src_uri_left_files)
PASS: test target mailing list (test_mbox.TestMbox.test_target_mailing_list)

SKIP: pretest pylint: No python related patches, skipping test (test_python_pylint.PyLint.pretest_pylint)
SKIP: test CVE tag format: No new CVE patches introduced (test_patch.TestPatch.test_cve_tag_format)
SKIP: test Signed-off-by presence: No new CVE patches introduced (test_patch.TestPatch.test_signed_off_by_presence)
SKIP: test Upstream-Status presence: No new CVE patches introduced (test_patch.TestPatch.test_upstream_status_presence_format)
SKIP: test bugzilla entry format: No bug ID found (test_mbox.TestMbox.test_bugzilla_entry_format)
SKIP: test lic files chksum presence: No added recipes, skipping test (test_metadata.TestMetadata.test_lic_files_chksum_presence)
SKIP: test license presence: No added recipes, skipping test (test_metadata.TestMetadata.test_license_presence)
SKIP: test pylint: No python related patches, skipping test (test_python_pylint.PyLint.test_pylint)
SKIP: test series merge on head: Merge test is disabled for now (test_mbox.TestMbox.test_series_merge_on_head)
SKIP: test summary presence: No added recipes, skipping test (test_metadata.TestMetadata.test_summary_presence)

---

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