Problem:    The RISC OS port has obvious errors and is not being maintained.
Solution:   Remove the RISC OS files and code.

Problem:    When the clipboard isn't supported: ":yank*" gives a confusing
            error message.
Solution:   Specifically mention that the register name is invalid.
            (Jean-Rene David)

Problem:    When a key code is not set get a confusing error message.
Solution:   Change the error message to say the key code is not set.

Problem:    Can't use the "+ register like "* for yank and put.
Solution:   Add "unnamedplus" to the 'clipboard' option. (Ivan Krasilnikov)

Problem:    Can't complete file names while ignoring case.
Solution:   Add 'wildignorecase'.

Problem:    v:windowid isn't set on MS-Windows.
Solution:   Set it to the window handle. (Chris Sutcliffe)

Problem:    maparg() doesn't return the flags, such as <buffer>, <script>,
            <silent>.  These are needed to save and restore a mapping.
Solution:   Improve maparg(). (also by Christian Brabandt)

Problem:    Can't pass the X window ID to another application.
Solution:   Add v:windowid. (Christian J. Robinson, Lech Lorens)

Problem:    Cannot store Dict and List in viminfo file.
Solution:   Add support for this. (Christian Brabandt)

Problem:    Netbeans doesn't work under Athena.
Solution:   Support Athena, just like Motif. (Xavier de Gaye)