doc: Wrap m-file docstrings to 79 characters + newline (80 total). * isrecording.m, soundsc.m, delaunay3.m, cell2mat.m, cumtrapz.m, del2.m, inputParser.m, interp1.m, interp3.m, narginchk.m, profile.m, validateattributes.m, delaunayn.m, tsearchn.m, voronoin.m, brighten.m, cmunique.m, colorcube.m, imfinfo.m, imshow.m, edit.m, orderfields.m, run.m, warning_ids.m, ode23.m, ode45.m, odeget.m, integrate_adaptive.m, kahan.m, ode_struct_value_check.m, runge_kutta_23.m, fminunc.m, fsolve.m, fzero.m, pkg.m, build.m, specular.m, view.m, bar.m, barh.m, contour3.m, isosurface.m, line.m, pie.m, pie3.m, quiver3.m, scatter.m, scatter3.m, stem3.m, stemleaf.m, surfl.m, tetramesh.m, isfigure.m, mkpp.m, pchip.m, residue.m, splinefit.m, rmpref.m, unique.m, eigs.m, ilu.m, factor.m, factorial.m, gallery.m, hankel.m, histc.m, ols.m, finv.m, fpdf.m, kruskal_wallis_test.m, weekday.m: Wrap m-file docstrings to 79 characters + newline (80 total).

--- a/scripts/general/cumtrapz.m	Sun Mar 27 15:15:24 2016 -0700
+++ b/scripts/general/cumtrapz.m	Sun Mar 27 15:50:01 2016 -0700
@@ -31,7 +31,8 @@
 ## When the argument @var{x} is omitted an equally spaced @var{x} vector with
 ## unit spacing (1) is assumed.  @code{cumtrapz (@var{x}, @var{y})} evaluates
 ## the integral with respect to the spacing in @var{x} and the values in
-## @var{y}.  This is useful if the points in @var{y} have been sampled unevenly.
+## @var{y}.  This is useful if the points in @var{y} have been sampled
+## unevenly.
 ##
 ## If the optional @var{dim} argument is given, operate along this dimension.
 ##