strip trailing whitespace from most source files * NEWS, doc/interpreter/contributors.in, doc/interpreter/func.txi, doc/interpreter/genpropdoc.m, doc/interpreter/octave_logo.eps, doc/interpreter/plot.txi, doc/interpreter/stmt.txi, examples/data/Makefile.am, libinterp/corefcn/data.cc, libinterp/corefcn/debug.cc, libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc, libinterp/corefcn/gl-render.cc, libinterp/corefcn/graphics.cc, libinterp/corefcn/graphics.in.h, libinterp/corefcn/load-path.cc, libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc, libinterp/corefcn/strfind.cc, libinterp/corefcn/toplev.cc, libinterp/corefcn/toplev.h, libinterp/corefcn/urlwrite.cc, libinterp/corefcn/variables.cc, libinterp/octave-value/ov-classdef.cc, libinterp/octave-value/ov-classdef.h, libinterp/octave.cc, libinterp/parse-tree/lex.h, libinterp/parse-tree/oct-parse.in.yy, libinterp/parse-tree/pt-classdef.h, liboctave/system/file-ops.cc, liboctave/system/oct-env.cc, m4/acinclude.m4, scripts/deprecated/finite.m, scripts/deprecated/fmod.m, scripts/deprecated/fnmatch.m, scripts/deprecated/luinc.m, scripts/deprecated/octave_tmp_file_name.m, scripts/deprecated/syl.m, scripts/deprecated/usage.m, scripts/general/inputParser.m, scripts/general/interp1.m, scripts/general/interp2.m, scripts/general/interp3.m, scripts/general/isequal.m, scripts/general/private/__isequal__.m, scripts/geometry/voronoi.m, scripts/image/image.m, scripts/image/imshow.m, scripts/image/ind2rgb.m, scripts/linear-algebra/bandwidth.m, scripts/linear-algebra/isbanded.m, scripts/miscellaneous/bzip2.m, scripts/miscellaneous/cast.m, scripts/miscellaneous/copyfile.m, scripts/miscellaneous/delete.m, scripts/miscellaneous/fullfile.m, scripts/miscellaneous/getappdata.m, scripts/miscellaneous/gunzip.m, scripts/miscellaneous/isappdata.m, scripts/miscellaneous/ls.m, scripts/miscellaneous/mex.m, scripts/miscellaneous/movefile.m, scripts/miscellaneous/orderfields.m, scripts/miscellaneous/recycle.m, scripts/miscellaneous/rmappdata.m, scripts/miscellaneous/setfield.m, scripts/miscellaneous/symvar.m, scripts/miscellaneous/tar.m, scripts/miscellaneous/tmpnam.m, scripts/miscellaneous/unpack.m, scripts/miscellaneous/ver.m, scripts/miscellaneous/what.m, scripts/miscellaneous/xor.m, scripts/miscellaneous/zip.m, scripts/optimization/fminbnd.m, scripts/optimization/sqp.m, scripts/path/private/getsavepath.m, scripts/path/savepath.m, scripts/pkg/pkg.m, scripts/pkg/private/installed_packages.m, scripts/plot/draw/plotyy.m, scripts/plot/draw/polar.m, scripts/plot/draw/private/__quiver__.m, scripts/plot/draw/private/__scatter__.m, scripts/plot/draw/private/__stem__.m, scripts/plot/draw/surface.m, scripts/plot/draw/surfnorm.m, scripts/plot/util/copyobj.m, scripts/plot/util/hgload.m, scripts/plot/util/hgsave.m, scripts/plot/util/isprop.m, scripts/plot/util/linkprop.m, scripts/plot/util/private/__go_draw_axes__.m, scripts/set/setdiff.m, scripts/set/union.m, scripts/signal/periodogram.m, scripts/sparse/eigs.m, scripts/sparse/ilu.m, scripts/sparse/qmr.m, scripts/sparse/sprand.m, scripts/sparse/sprandn.m, scripts/specfun/beta.m, scripts/specfun/ellipke.m, scripts/specfun/isprime.m, scripts/statistics/base/lscov.m, scripts/testfun/__run_test_suite__.m, scripts/testfun/test.m: Strip trailing whitespace.

--- a/libinterp/octave-value/ov-classdef.cc	Tue Jan 20 10:24:46 2015 -0500
+++ b/libinterp/octave-value/ov-classdef.cc	Tue Jan 20 10:29:54 2015 -0500
@@ -411,7 +411,7 @@
   else
     error ("invalid property/method access in class `%s'",
            cls.get_name ().c_str ());
-  
+
   return false;
 }
 
@@ -1394,7 +1394,7 @@
 
   if (cls.ok ())
     return cls.get_names ();
-  
+
   return string_vector ();
 }
 
@@ -1534,7 +1534,7 @@
                         }
                       else
                         {
-                          octave_value val = 
+                          octave_value val =
                             prop.get_value (obj, true, "subsasgn");
 
                           if (! error_state)
@@ -1900,7 +1900,7 @@
         }
     }
 }
-  
+
 bool cdef_object_scalar::is_constructed_for (const cdef_class& cls) const
 {
   return (is_constructed ()
@@ -3117,7 +3117,7 @@
           return retval;
         }
     }
- 
+
   octave_value get_fcn = get ("GetMethod");
 
   // FIXME: should check whether we're already in get accessor method
@@ -3129,7 +3129,7 @@
       octave_value_list args;
 
       args(0) = to_ov (obj);
-      
+
       args = execute_ov (get_fcn, args, 1);
 
       if (! error_state)
@@ -3184,7 +3184,7 @@
           return;
         }
     }
- 
+
   octave_value set_fcn = get ("SetMethod");
 
   if (set_fcn.is_empty () || is_method_executing (set_fcn, obj))