Problem:    has('patch-7.4.1') doesn't work.
Solution:   Fix off-by-one error. (Thinca)

https://github.com/vim/vim/commit/819821c5a95fc60797ecbb5e5ca1302e397e3d9a

Problem:    Crash in :cgetexpr.
Solution:   Check for NULL pointer. (Dominique) Add a test.

https://github.com/vim/vim/commit/89c64d557dbe0bacfdd7b2872411b00cc1523d85

Problem:    Quickfix test fails.
Solution:   Accept any number of matches.

https://github.com/vim/vim/commit/f68f1d70799631d38461c36cd59d08cf839b010d

Problem:    Using freed memory after setqflist() and ":caddbuffer".  (Dominique)
Solution:   Set qf_ptr when adding the first item to the quickfix list.

https://github.com/vim/vim/commit/8b20179c657b4266dff115486ca68c6a50324071

Problem:    Crash when an autocommand changes a quickfix list. (Dominique)
Solution:   Check wether an entry is still valid. (Yegappan Lakshmanan,
            Hirohito Higashi)

https://github.com/vim/vim/commit/ffec3c53496d49668669deabc0724ec78e2274fd

Problem:    Order of matches for 'omnifunc' is messed up. (Danny Su)
Solution:   Do not set compl_curr_match when called from complete_check().
            (closes vim/vim#1168)

https://github.com/vim/vim/commit/472e85970ee3a80abd824bef510df12e9cfe9e96

Problem:    Vertical movement after CTRL-A ends up in the wrong column.
            (Urtica Dioica)
Solution:   Set curswant when appropriate. (Hirohito Higashi)

https://github.com/vim/vim/commit/8e08125d3a9afd0b16cd84454ae9ddad0abaaab0

Problem:    Still quickfix test in old style.
Solution:   Turn test 10 into a new style test.

https://github.com/vim/vim/commit/7eba3d2cbf19e731dc51652bc26099cc253d538a

Problem:    The quickfix title is truncated.
Solution:   Save the command before it is truncated. (Anton Lindqvist)

https://github.com/vim/vim/commit/5584df65a0ca2315d1eebc13c54a448bee4d0758

vim-patch:7.4.1588