doc: grammarcheck documentation for 4.2 release. * container.txi, contrib.txi, diagperm.txi, errors.txi, external.txi, func.txi, image.txi, nonlin.txi, numbers.txi, plot.txi, quad.txi, sparse.txi, strings.txi, tips.txi, var.txi, vectorize.txi, __dispatch__.cc, cellfun.cc, file-io.cc, gsvd.cc, load-path.cc, regexp.cc, __init_gnuplot__.cc, __osmesa_print__.cc, qr.cc, xzip.cc, ov-classdef.cc, octave_config_info.m, grabcode.m, publish.m, dialog.m, condest.m, normest1.m, mkdir.m, ode23.m, ode45.m, odeplot.m, AbsRel_Norm.m, integrate_adaptive.m, integrate_const.m, integrate_n_steps.m, axis.m, isocaps.m, isocolors.m, isosurface.m, light.m, __calc_isovalue_from_data__.m, __marching_cube__.m, cov.m, median.m: doc: grammarcheck documentation for 4.2 release.

--- a/scripts/miscellaneous/mkdir.m	Mon Aug 15 12:46:51 2016 +0200
+++ b/scripts/miscellaneous/mkdir.m	Mon Aug 15 10:05:50 2016 -0700
@@ -17,7 +17,7 @@
 ## -*- texinfo -*-
 ## @deftypefn  {} {} mkdir @var{dir}
 ## @deftypefnx {} {} mkdir (@var{parent}, @var{dir})
-## @deftypefnx {} {[@var{status}, @var{msg}, @var{msgid}] =} mkdir (...)
+## @deftypefnx {} {[@var{status}, @var{msg}, @var{msgid}] =} mkdir (@dots{})
 ## Create a directory named @var{dir} in the directory @var{parent},
 ## creating any intermediate directories if necessary.
 ##