Replace function handles with function names in cellfun calls for 15% speedup. * accumarray.m arrayfun.m, blkdiag.m, cell2mat.m, common_size.m, interp3.m, interpn.m, __isequal__.m, structfun.m, voronoi.m, strread.m, fullfile.m, getfield.m, __xzip__.m, setfield.m, what.m, pkg.m, axis.m, pareto.m, __ghostscript__.m, __go_draw_axes__.m, __patch__.m, refreshdata.m, whitebg.m, lcm.m, index.m, strcat.m, strmatch.m, validatestring.m: Replace function handles in calls to cellfun with double quoted function names.

--- a/scripts/geometry/voronoi.m
+++ b/scripts/geometry/voronoi.m
@@ -129,7 +129,7 @@
   idx = find (!infi);
   ll = length (idx);
   c = c(idx).';
-  k = sum (cellfun ('length', c));
+  k = sum (cellfun ("length", c));
   edges = cell2mat(cellfun (@(x) [x ; [x(end), x(1:end-1)]], c,
                             "uniformoutput", false));