Splitting plot/ script directory

[Rik]

9/27/13

All,

'ls -1 scripts/plot/*.m | wc -l' = 159 which is huge.  It looks like it is
time to break this directory into more manageable chunks.

I was thinking of moving the GUI building components, such as uimenu or
waitbar, to an entirely new directory at the script top-level.  Offhand, I
would call this just 'gui' to be in line with chapter 35 of the manual
called "GUI Development" which documents these features.

For the rest, I was thinking of following the statistics directory which
contains one more level of hierarchy.  In this case I was thinking of

plot/plotfn  : Actual plotting functions such as plot, surf, etc.

plot/general : Annotation commands like title, other functions for
controlling appearance such as xlim, pbaspect, and all other functions
which don't fit in plotfn such as gca, findobj, print, or meshgrid.

There is probably enough functions even in plot/general to warrant a third
directory if anyone has a sensible categorization scheme.

--Rik