Problem:    Packadd test fails on MS-Windows.
Solution:   Ignore difference between forward and backward slashes.
https://github.com/vim/vim/commit/53c8a478cc4265549597b00214e0da812154742e

Problem:    An "after" directory of a package is appended to 'rtp', which
            will be after the user's "after" directory. ()
Solution:   Insert the package "after" directory before any other "after"
            directory in 'rtp'. (closes vim/vim#3409)
https://github.com/vim/vim/commit/99396d4cbf78d313a454c7448acc07412d2e45b7

Problem:    Package directory not added to 'rtp' if prefix matches.
Solution:   Check the match is a full match. (Ozaki Kiichi, closes vim/vim#2817)
            Also handle different ways of spelling a path.
https://github.com/vim/vim/commit/f98a39ca57d001ba3e24831bae1e375790fb41f0

Problem:    When package path is a symlink adding it to 'runtimepath' happens
            at the end.
Solution:   Do not resolve symlinks before locating the position in
            'runtimepath'. (Ozaki Kiichi, closes vim/vim#2604)
https://github.com/vim/vim/commit/2374faae111057ee28e8d487f9a52a95855e2206

Problem:    Expression evaluation may repeat an error message. (Jason
            Franklin)
Solution:   Increment did_emsg and check for the value when giving an error
            for the echo command.
https://github.com/vim/vim/commit/76a6345433bc2a600689397fb28165a2e5793720

Close gzip file handles.

Sometimes 008_autocommands_spec fails like this:

    [ RUN      ] autocommands that delete and unload buffers: BufUnload, VimLeave: -- Output to stderr:
    CMake Error at /home/travis/build/neovim/neovim/cmake/RunTests.cmake:53 (message):
      functional tests failed with error: 1

The final :quit + wait() is a race. Use command() instead, which is
synchronous.  Use command('silent! ...') everywhere else too, because
it's clearer instead of feeding input and clearing the expected errors
with CTRL-L.

Problem:    C indent wrong when * immediately follows comment. (John Bowler)
Solution:   Do not see "/*" after "*" as a comment start. (closes vim/vim#2321)
https://github.com/vim/vim/commit/f8c53d3d268fc67a29c8c1a4e76fae85762e11b5