patch 8.0.0679: using freed memory

Problem:    Using freed memory.
Solution:   Get the parent frame pointer earlier.

patch 8.0.0678: closing a window does not trigger resizing

Problem:    When 'equalalways' is set and closing a window in a separate
            frame, not all window sizes are adjusted. (Glacambre)
Solution:   Resize all windows if the new current window is not in the same
            frame as the closed window. (closes vim#1707)

patch 8.0.0677: setting 'filetype' may switch buffers

Problem:    Setting 'filetype' internally may cause the current buffer and
            window to change unexpectedly.
Solution:   Set curbuf_lock. (closes vim#1734)

patch 8.0.0676: crash when closing quickfix window in autocmd

Problem:    Crash when closing the quickfix window in a FileType autocommand
            that triggers when the quickfix window is opened.
Solution:   Save the new value before triggering the OptionSet autocommand.
            Add the "starting" flag to test_override() to make the text work.

patch 8.0.0675: 'colorcolumn' has a higher priority than 'hlsearch'

Problem:    'colorcolumn' has a higher priority than 'hlsearch', it should be
            the other way around. (Nazri Ramliy)
Solution:   Change the priorities. (LemonBoy, closes vim#1794)

patch 8.0.0674: cannot build with eval but without timers

Problem:    Cannot build with eval but without timers.
Solution:   Add #ifdef (John Marriott)

patch 8.0.0673: build failure without conceal feature

Problem:    Build failure without conceal feature.
Solution:   Add #ifdef.

patch 8.0.0672: third item of synconcealed() changes too often

Problem:    Third item of synconcealed() changes too often. (Dominique Pelle)
Solution:   Reset the sequence number at the start of each line.

patch 8.0.0671: hang when typing CTRL-C in confirm() in timer

Problem:    When a function invoked from a timer calls confirm() and the user
            types CTRL-C then Vim hangs.
Solution:   Reset typebuf_was_filled. (Ozaki Kiichi, closes vim#1791)

patch 8.0.0670: can't use input() in a timer callback

Problem:    Can't use input() in a timer callback. (Cosmin Popescu)
Solution:   Reset vgetc_busy and set timer_busy. (Ozaki Kiichi, closes vim#1790,
            closes vim#1129)