Problem:    A shell command switching screens may still have a problem with
            the kitty keyboard protocol.
Solution:   Disable the kitty keyboard protocol both in the current and the
            alternate screen, if there are indications it might be needed.
            (issue #11705)  Also fix naming.

Problem:    Code for making 'shortmess' temporarily empty is repeated.
Solution:   Add functions for making 'shortmess' empty and restoring it.
            (Christian Brabandt, closes #11709)

Problem:    When using Kitty a shell command may mess up the key protocol
            state.
Solution:   Output t_te before t_TE.  If t_te switches between the main and
            the alternate screen then deactivating the key protocol by t_TE
            should happen after switching screen. (issue #11705)

Problem:    Some test function names do not match what they are doing.
Solution:   Leave out user data for the test that is called "NoUserData".
            (closes #11703)

Problem:    Cannot display 'showcmd' somewhere else.
Solution:   Add the 'showcmdloc' option. (Luuk van Baal, closes #11684)

problem:    Private and public object members are not implemented yet.
Solution:   Implement private and public object members.

Problem:    Build failure with some compilers that can't handle a
            declaration directly after a "case" statement.
Solution:   Add a block to put the declarations in.

Problem:    String value of class and object do not have useful information.
Solution:   Add the class name and for the object the member values.

Problem:    Conflict between supercollider and scala filetype detection.
Solution:   Do not check for "Class : Method", it can appear in both
            filetypes. (Chris Kipp, closes #11699)

Problem:    Leaking memory when disassembling an object method.
Solution:   Free the typval of the class.