Update UFL to 2016.2

python/dune/perftool/ufl/execution.py

@@ -139,6 +139,14 @@ def split_expression(expr):
 
 
 class FiniteElement(ufl.FiniteElement):
+
+    __slots = ufl.FiniteElement.__slots__ + ["dirichlet_expression", "dirichlet_constraints"]
+
+    def __new__(cls, *args, **kwargs):
+        kwargs.pop('dirichlet_constraints', None)
+        kwargs.pop('dirichlet_expression', None)
+        return ufl.FiniteElement.__new__(cls, *args, **kwargs)
+
     def __init__(self, *args, **kwargs):
         if ('dirichlet_constraints' in kwargs) or ('dirichlet_expression' in kwargs):
             # Get dirichlet_constraints and convert it to Expression if necessary!

ufl @ e64c3fae

-Subproject commit 51edbb951d99d5e431aaf5abe85a48763473c939
+Subproject commit e64c3fae7654848f4dc77754b74311758e7fb351