Make COPYRIGHT.txt compliant with debian/copyright specification

[twrightsman]

I want to note as someone helping to maintain the godot package in Debian that it's incredibly awesome and helpful that Godot maintains a Debian-compatible copyright file.

I've made some minor adjustments to conform the file to the specification.

1. Move the header # comment lines into a proper Comment: field.
2. Remove ./ prefixes from file paths.
   • From the Files: field specification:

     Patterns match pathnames that start at the root of the source tree. Thus, “Makefile.in” matches only the file at the root of the tree, but “*/Makefile.in” matches at any depth.

3. Add * glob pattern to end of all directories, to match the files within them.
   • From the Files: field specification:

     This syntax does not distinguish file names from directory names; a trailing slash in a pattern will never match any actual path. A whole directory tree may be selected with a pattern like "foo/*".

[akien-mga]

I'm confused as to why this specific specification matters? Where did you find that this file is supposed to follow that?

It's written in that file that it follows Debian's specification for machine-readable copyright information. So this PR is (probably, haven't reviewed yet) correct.

[AThousandShips]

Thank you! My bad it was right there missed it!

The associated scripts in core handling the copyright files needs to be updated to solve CI

[akien-mga]

The changes look fine but it breaks the build, as we actually parse that file too to generate some headers, and the parser is also not spec compliant (probably doesn't need to be, but it should be adjusted to match the new format).

It's in core/core_builders.py#make_license_header.

[twrightsman]

Would you like me to fix the parser as part of this PR?

[fire]

I did a small review and didn't see anything wrong. Thanks for also updating the script.

[akien-mga]

Looks good! Could you squash the commits? See PR workflow for instructions.

[twrightsman]

Could you squash the commits?

Done!

Thanks everyone for reviewing and again for maintaining this copyright file.

[Repiteo]

Thanks!