use absolute import for numpy in fused types code

Cython/Compiler/FusedNode.py

@@ -559,6 +559,10 @@ class FusedCFuncDefNode(StatListNode):
             """)
         decl_code.indent()
 
+        pyx_code.put_chunk(
+            u"""
+                from __future__ import absolute_import  # for later numpy import
+            """)
         pyx_code.put_chunk(
             u"""
                 def __pyx_fused_cpdef(signatures, args, kwargs, defaults):