Problem:    No debugger making use of the terminal window.
Solution:   Add the term debugger plugin.  So far only displays the current
            line when stopped.

Problem:    Asan suppress file missing from distribution.
Solution:   Add the file.

Problem:    Travis uses an old Ubuntu version.
Solution:   Switch from precise to trusty. (Ken Takata, closes #1897)

Problem:    File in Filelist does not exist.
Solution:   Remove the line.

Problem:    Libvterm MSVC Makefile not included in the distribution.
Solution:   Add the file to the list.

Problem:    No terminal emulator support.  Cannot properly run commands in the
            GUI.  Cannot run a job interactively with an ssh connection.
Solution:   Very early implementation of the :terminal command.  Includes
            libvterm converted to ANSI C.  Many parts still missing.

Problem:    Building the command table requires Perl.
Solution:   Use a Vim script solution. (Dominique Pelle, closes #1641)

Problem:    Can't run make with several jobs, creating directories has a race
            condition.
Solution:   Use the MKDIR_P autoconf mechanism. (Eric N. Vander Weele,
            closes #1639)

Problem:    RISC OS support was removed long ago, but one file is still
            included.
Solution:   Delete the file. (Thomas Dziedzic, closes #1603)

Problem:    Looking up an Ex command is a bit slow.
Solution:   Instead of just using the first letter, also use the second letter
            to skip ahead in the list of commands. Generate the table with a
            Perl script. (Dominique Pelle, closes #1589)