Remove trailing whitespace at end of lines. * stl_algo.h-fixed, container.txi, genpropdoc.m, gui.txi, plot.txi, plotimages.m, RELEASE.PROCESS, Figure.cc, Figure.h, gl-render.h, gl2ps-renderer.cc, gl2ps-renderer.h, graphics.cc, jit-typeinfo.cc, sub2ind.cc, txt-eng-ft.cc, txt-eng-ft.h, ov-base-diag.h, ov-base-mat.cc, pt-eval.cc, CMatrix.cc, acinclude.m4, quadgk.m, uicontextmenu.m, uicontrol.m, uipanel.m, uipushtool.m, uitoggletool.m, uitoolbar.m, waitbar.m, imshow.m, viridis.m, ode_event_handler.m, fminunc.m, fplot.m, plot.m, surfnorm.m, quantile.m, datevec.m: Remove trailing whitespace at end of lines.

--- a/scripts/plot/draw/fplot.m	Wed Nov 18 16:12:41 2015 -0800
+++ b/scripts/plot/draw/fplot.m	Wed Nov 18 16:40:22 2015 -0800
@@ -70,7 +70,7 @@
 ## Consider this when writing user-defined functions and use @code{.*},
 ## @code{./}, etc.  See the function @code{vectorize} for potentially
 ## converting inline or anonymous functions to vectorized versions.
-##  
+##
 ## @seealso{ezplot, plot, vectorize}
 ## @end deftypefn