Use tempname() rather than tmpnam() in core Octave. * scripts/miscellaneous/tempname.m: Removed m-file as function is now C++. * scripts/miscellaneous/tmpnam.m: New m-file is an alias that calls tempname. * scripts/miscellaneous/module.mk: Add tmpnam.m to build system. * io.txi: Place tempname, tempdir, P_tmpdir docstrings in section on temporary files. * system.txi: Remove tempname, tempdir, P_tmpdir docstrings from generic system functions section of manual. * dirfns.cc, dlmread.cc, md5sum.cc, ov-fcn-handle.cc: Replace instances of tmpnam with tempname in BIST code. * file-io.cc (Ftempname): Change DEFUNX for tmpnam to DEFUN for tempname. Remove seealso links to tmpnam. * ftp.m, playaudio.m, wavwrite.m, imformats.m, imread.m, imwrite.m, imageIO.m, csvwrite.m, dlmwrite.m, fileread.m, importdata.m, textread.m, textscan.m, genvarname.m, unpack.m, install.m, legend.m, __gnuplot_drawnow__.m, copyobj.m, hgsave.m, print.m, __ghostscript__.m, __gnuplot_get_var__.m, __gnuplot_ginput__.m, __gnuplot_print__.m: Replace tmpnam with tempname in core code. * build-sparse-tests.sh, io.tst, prefer.tst, system.tst: Replace tmpnam with tempname in test code.

--- a/scripts/plot/util/print.m	Tue Oct 21 14:37:44 2014 -0400
+++ b/scripts/plot/util/print.m	Wed Oct 22 10:41:15 2014 -0700
@@ -306,7 +306,7 @@
 
   if (opts.append_to_file)
     [~, ~, ext] = fileparts (opts.ghostscript.output);
-    opts.ghostscript.prepend = strcat (tmpnam (), ext);
+    opts.ghostscript.prepend = [tempname() ext];
     copyfile (opts.ghostscript.output, opts.ghostscript.prepend);
   endif
 
@@ -484,7 +484,7 @@
 
   if (nargin < 2 || strcmp (filein, "-") || isempty (filein))
     pipein = true;
-    filein = strcat (tmpnam (), ".eps");
+    filein = [tempname() ".eps"];
     if (dos_shell)
       cleanup = sprintf ("& del %s ", strrep (filein, '/', '\'));
     else
@@ -496,7 +496,7 @@
   endif
   if (strcmp (fileout, "-"))
     pipeout = true;
-    fileout = strcat (tmpnam (), ".eps");
+    fileout = [tempname() ".eps"];
     if (dos_shell)
       cleanup = horzcat (cleanup, sprintf ("& del %s ", strrep (fileout, '/', '\')));
     else