Problem:    The bitmaps/vim.ico file is not in the distribution.
Solution:   Add it back to the distribution.  Adjust the build rules to have
            it end up in the right place.

Problem:    About time to release Vim 9.0.
Solution:   Update the version number everywhere.

Problem:    Still mentioning version8, some cosmetic issues.
Solution:   Prefer mentioning version9, cosmetic improvements.

Problem:    MS-Windows: vim.def is no longer used.
Solution:   Delete vim.def. (Ken Takata, closes #10569)

Problem:    Vim help presentation could be better.
Solution:   Add an imported file for extra Vim help support.  Show highlight
            names in the color they have.

Problem:    The Athena GUI support is outdated.
Solution:   Remove the Athena GUI code.

Problem:    MS-Windows: the installed icon is low resolution.
Solution:   Use a better icon.  Install vim.ico. (Christian Brabandt,
            closes #9931, closes #9930)

Problem:    The find_tags_in_file() function is much too long.
Solution:   Refactor into multiple smaller functions. (Yegappan Lakshmanan,
            closes #9892)