sage.combinat: Add '# cython: binding=True' to the split cython modules

Author: Matthias Koeppe

src/sage/combinat/combinat_cython.pyx

@@ -1,3 +1,4 @@
+# cython: binding=True
 """
 Fast computation of combinatorial functions (Cython + mpz)
 

src/sage/combinat/posets/hasse_cython.pyx

@@ -1,3 +1,4 @@
+# cython: binding=True
 r"""
 Some fast computations for finite posets
 """

src/sage/combinat/posets/hasse_cython_flint.pyx

@@ -1,3 +1,4 @@
+# cython: binding=True
 r"""
 Some fast computations for finite posets using FLINT matrices
 """

src/sage/combinat/posets/linear_extension_iterator.pyx

@@ -1,3 +1,4 @@
+# cython: binding=True
 r"""
 Fast linear extension iterator
 """

src/sage/combinat/set_partition_iterator.pyx

@@ -1,3 +1,4 @@
+# cython: binding=True
 r"""
 Fast set partition iterators
 """