patch 8.0.0711: cannot build without the wildmenu feature

Problem:    Cannot build without the wildmenu feature.
Solution:   Add #ifdef

patch 8.0.0710: a job that writes to a buffer clears completion

Problem:    A job that writes to a buffer clears command line completion.
            (Ramel Eshed)
Solution:   Do not redraw while showing the completion menu.

patch 8.0.0709: libvterm cannot use vsnprintf()

Problem:    Libvterm cannot use vsnprintf(), it does not exist in C90.
Solution:   Use vim_vsnprintf() instead.

patch 8.0.0708: some tests are old style

Problem:    Some tests are old style.
Solution:   Change a few tests from old style to new style. (pschuh,
            closes vim#1813)

patch 8.0.0707: freeing wrong memory with certain autocommands

Problem:    Freeing wrong memory when manipulating buffers in autocommands.
            (James McCoy)
Solution:   Also set the w_s pointer if w_buffer was NULL.

patch 8.0.0706: crash when cancelling the cmdline window in Ex mode

Problem:    Crash when cancelling the cmdline window in Ex mode. (James McCoy)
Solution:   Do not set cmdbuff to NULL, make it empty.

patch 8.0.0705: crash when there is an error in a timer callback

Problem:    Crash when there is an error in a timer callback. (Aron Griffis,
            Ozaki Kiichi)
Solution:   Check did_throw before discarding an exception.  NULLify
            current_exception when no longer valid.

patch 8.0.0704: problems with autocommands when opening help

Problem:    Problems with autocommands when opening help.
Solution:   Avoid using invalid "varp" value.  Allow using :wincmd if buffer
            is locked. (closes vim#1806, closes vim#1804)

patch 8.0.0703: illegal memory access with empty :doau command

Problem:    Illegal memory access with empty :doau command.
Solution:   Check the event for being out of range. (James McCoy)

patch 8.0.0702: an error in a timer can make Vim unusable

Problem:    An error in a timer can make Vim unusable.
Solution:   Don't set the error flag or exception from a timer.  Stop a timer
            if it causes an error 3 out of 3 times.  Discard an exception
            caused inside a timer.