Problem:    Octave/Matlab filetype detection does not work properly.
Solution:   Update the patterns used for matching. (Doug Kearns)
https://github.com/vim/vim/commit/ca0627df69c29508f6f797bef27a1f5fa9a447d3

Problem:    Octave files are not recognized.
Solution:   Detect Octave files. (Doug Kearns)
https://github.com/vim/vim/commit/deba5eb195d6ac70171d4973091fa884809fa3fa

Problem:    Cannot recognize elixir files.
Solution:   Recognize Elixir-specific files.  Check if an .ex file is Euphoria
            or Elixir. (Austin Gatlin, closes vim/vim#8401, closes vim/vim#8446)
https://github.com/vim/vim/commit/f3caeb63d62c08b579e9b5f40b35e8bf64dde87a

Update runtime files.
https://github.com/vim/vim/commit/207f009326c8f878defde0e594d7d9ed9860106e

Omit nl.po.

Update runtime files
https://github.com/vim/vim/commit/d1caa941d876181aae0ebebc6ea954045bf0da24

Cherry-pick error E452 from patch v8.2.0486.

Update a few runtime files.
https://github.com/vim/vim/commit/d7df279808f75f7a4af8dd48deae73a9b727ac3b

Problem:    Pascal-like filetypes not always detected.
Solution:   Improved Puppet, InstantFPC and Pascal detection. (Doug Kearns,
            closes vim/vim#7662)
https://github.com/vim/vim/commit/a0122dcd1cc9e9bb62c071a9b91426a8bce4f8d9

Problem:    Filetype test fails on MS-Windows.
Solution:   Remove "^" from pattern.
https://github.com/vim/vim/commit/aa9675a61d510c4a56c3845d05b32b1ef780d119

Problem:    /usr/lib/udef/rules.d not recognized as udevrules.
Solution:   Adjust match pattern. (Haochen Tong, closes 36722)
https://github.com/vim/vim/commit/624b6eaf20f3e8c669425b6a32f17fb9ec2ebbd2

Update runtime files.
https://github.com/vim/vim/commit/63b74a8362b14576b21d342dc424d0396ca8ea27