dMatrix.cc test failures

[Marco atzeri]

changeset f217edac2c71 "fix dimension check for A'\B (bug #33997)"
introduces the "Mt, rvt2 but forgot to declared as shared

some other tests are failing (on cygwin) for tolerance

proposed change:

diff -r 7aa9cb7aaa32 liboctave/dMatrix.cc
--- a/liboctave/dMatrix.cc      Tue Aug 23 14:00:02 2011 -0500
+++ b/liboctave/dMatrix.cc      Wed Aug 24 00:02:58 2011 +0200
@@ -3111,7 +3111,7 @@
 */

 /* Test some simple identities
-%!shared M, cv, rv
+%!shared M, cv, rv, Mt, rvt
 %! M = randn(10,10)+100*eye(10,10);
 %! Mt = M';
 %! cv = randn(10,1);
@@ -3119,10 +3119,10 @@
 %! rv = randn(1,10);
 %! rvt = rv';
 %!assert([M*cv,M*cv],M*[cv,cv],1e-14)
-%!assert([M'*cv,M'*cv],M'*[cv,cv],1e-14)
-%!assert([rv*M;rv*M],[rv;rv]*M,1e-14)
-%!assert([rv*M';rv*M'],[rv;rv]*M',1e-14)
-%!assert(2*rv*cv,[rv,rv]*[cv;cv],1e-14)
+%!assert([M'*cv,M'*cv],M'*[cv,cv],3e-14)
+%!assert([rv*M;rv*M],[rv;rv]*M,3e-14)
+%!assert([rv*M';rv*M'],[rv;rv]*M',3e-14)
+%!assert(2*rv*cv,[rv,rv]*[cv;cv],3e-14)
 %!assert(M'\cv,Mt\cv,1e-14)
 %!assert(M'\rv',Mt\rvt,1e-14)
 */