maint: use rows() and columns() to clarify m-files. * gradient.m, interp1q.m, rat.m, tsearchn.m, image.m, imwrite.m, area.m, contourc.m, hist.m, isocolors.m, isonormals.m, meshz.m, print.m, __bar__.m, __go_draw_axes__.m, __interp_cube__.m, __marching_cube__.m, __patch__.m, __print_parse_opts__.m, __quiver__.m, rose.m, shrinkfaces.m, stairs.m, surfnorm.m, tetramesh.m, text.m, deconv.m, spline.m, intersect.m, setdiff.m, setxor.m, union.m, periodogram.m, pcg.m, perms.m: Replace size (x,1) with rows (x) and size(x,2) with columns(x).

--- a/scripts/polynomial/spline.m	Tue Jul 17 15:08:20 2012 +0200
+++ b/scripts/polynomial/spline.m	Tue Jul 17 13:34:19 2012 -0700
@@ -100,7 +100,7 @@
   endfor
 
   complete = false;
-  if (size (a, 1) == n + 2)
+  if (rows (a) == n + 2)
     complete = true;
     dfs = a(1,:);
     dfe = a(end,:);