[Cleanup 6] Doc: update the NOTICE and LICENSE files

[tuhaihe]

Fixes #ISSUE_Number

What does this PR do?

Before donating Cloudberry to the Apache Incubator, we made some adjustments to LICENSE and NOTICE files, as reflected in the git blame history. However, those changes introduced unnecessary entries that didn't fully align with Apache guidelines. This commit refines these files to better comply with Apache standards and reflects the latest changes in the project source code.

The COPYRIGHT file, inherited from the PostgreSQL upstream, served a similar purpose as the NOTICE file. As it is redundant, it has been removed from this commit.

Type of Change

• Bug fix (non-breaking change)
• New feature (non-breaking change)
• Breaking change (fix or feature with breaking changes)
• Documentation update

Breaking Changes

Test Plan

• Unit tests added/updated
• Integration tests added/updated
• Passed make installcheck
• Passed make -C src/test installcheck-cbdb-parallel

Impact

Performance:

User-facing changes:

Dependencies:

Checklist

• Followed contribution guide
• Added/updated documentation
• Reviewed code for security implications
• Requested review from cloudberry committers

Additional Context

CI Skip Instructions

---

[tuhaihe]

Notes for your information:

• the COPYRIGHT file, inherited from PostgreSQL, served a similar purpose as the NOTICE file. So delete it directly.
• For the old NOTICE, like libuv, Zstandard software and Xerces-C descriptions, they were added incorrectly before joining the ASF last year. Cloudberry does not include their codes, so delete these lines directly.

[avamingli]

• like libuv, Zstandard software and Xerces-C descriptions, they were added incorrectly before joining the ASF last year. Cloudberry does not include their codes, so delete these lines directly.

libuv is used in ic_proxy since Greenplum:

cloudberry/contrib/interconnect/proxy/ic_proxy_router.h

Line 18 in 43ca55d

#include <uv.h>

[avamingli]

• Zstandard, Xerces

They are used in codes too.

[avamingli]

If you make any modifications to the C code, it's important to note that you typically cannot use the "skip CI" flag. Even small changes, like adjustments to the output text, may result in regression differences.

[tuhaihe]

• Zstandard, Xerces

They are used in codes too.

Ok. I want to confirm that if these three project codes are included in the repo, or just link them dynamically?

[tuhaihe]

If you make any modifications to the C code, it's important to note that you typically cannot use the "skip CI" flag. Even small changes, like adjustments to the output text, may result in regression differences.

yes, correct. Will remove the tag to trigger the CI again.

[tuhaihe]

• Zstandard, Xerces

They are used in codes too.

Ok. I want to confirm that if these three project codes are included in the repo, or just link them dynamically?

After confirmation, these dependencies are only linked dynamically, not shipped in the codebase.

[tuhaihe]

For the files src/include/port/win32_msvc/glob.h & src/port/glob.c under BSD-4-Caluse ((University of California-Specific)), seems are listed on CatX¹, maybe we need to pay attention to this?

Footnotes

1. https://www.apache.org/legal/resolved.html#category-x ↩

[tuhaihe]

Hi dear mentors, @WillemJiang @yaooqinn @rvs could you please help take a look? Thanks!