[Patch] Clean obsolete functions() from assert.m

[Thomas Weber]

Hi, 

I stumbled across this when checking the bioinfo package. Using 3.1.51:
octave3.1:1> test assert
warning: struct_elements is obsolete and will be removed from a future version of Octave; please use fieldnames instead
warning: struct_contains is obsolete and will be removed from a future version of Octave; please use isfield instead
PASSES 55 out of 55 tests

Patch attached.

	Thomas

-------------- next part --------------
# HG changeset patch
# User Thomas Weber <thomas.weber.mail at gmail.com>
# Date 1228063930 -3600
# Node ID 4fc1023c13b56de5f3c19405fa6213bde92569c1
# Parent  03b414516dd8e72ed1a326a65e1346572696c187
Replace deprecated struct_elements/struct_contains by fieldnames/isfield, respectively

diff --git a/scripts/testfun/assert.m b/scripts/testfun/assert.m
--- a/scripts/testfun/assert.m
+++ b/scripts/testfun/assert.m
@@ -110,14 +110,14 @@
 
     elseif (isstruct (expected))
       if (! isstruct (cond) || any (size (cond) != size (expected))
-	  || rows(struct_elements (cond)) != rows (struct_elements (expected)))
+	  || rows(fieldnames (cond)) != rows (fieldnames (expected)))
 	iserror = 1;
       else
 	try
 	  empty = numel (cond) == 0;
 	  normal = numel (cond) == 1;
 	  for [v, k] = cond
-	    if (! struct_contains (expected, k))
+	    if (! isfield (expected, k))
 	      error ();
 	    endif
 	    if (empty)