trial fix for bizarre build bug

Cython/Compiler/Visitor.pxd

@@ -4,7 +4,7 @@ cdef class BasicVisitor:
     cdef dict dispatch_table
     cpdef visit(self, obj)
     cdef _visit(self, obj)
-    cdef _find_handler(self, obj)
+    cdef find_handler(self, obj)
 
 cdef class TreeVisitor(BasicVisitor):
     cdef public list access_path

Cython/Compiler/Visitor.py

@@ -26,11 +26,11 @@ class BasicVisitor(object):
         try:
             handler_method = self.dispatch_table[type(obj)]
         except KeyError:
-            handler_method = self._find_handler(obj)
+            handler_method = self.find_handler(obj)
             self.dispatch_table[type(obj)] = handler_method
         return handler_method(obj)
 
-    def _find_handler(self, obj):
+    def find_handler(self, obj):
         cls = type(obj)
         #print "Cache miss for class %s in visitor %s" % (
         #    cls.__name__, type(self).__name__)