don't mix relative and absolute imports, just use relative ones

--HG--
extra : rebase_source : 6d0601030b617db297a3572a5e030cf77c5881a4

Cython/Compiler/AnalysedTreeTransforms.py

-from Cython.Compiler.Visitor import ScopeTrackingTransform
+from Visitor import ScopeTrackingTransform
 from Nodes import StatListNode, SingleAssignmentNode, CFuncDefNode, DefNode
 from ExprNodes import DictNode, DictItemNode, NameNode, UnicodeNode
 from PyrexTypes import py_object_type